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United States. Forest Service. Northern Region. State & Private Forestry
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United States. Forest Service. Northern Region. State & Private Forestry (195)
Mcgregor, Mark D. (54)
Tunnock, Scott (28)
Dooling, Oscar J. (25)
Bousfield, Wayne E. (23)
Hamel, Dennis R. (23)
Meyer, Hubert E. (19)
Dewey, Jerald E. (15)
Gibson, Kenneth E. (13)
Bennett, D. D. (12)
Oakes, Robert D. (12)
Carlson, Clinton E. (10)
Kohler, Steve (9)
Lood, Rudolph C. (8)
Byler, James W. (7)
Ciesla, William M. (7)
Flavell, Thomas H. (7)
James, Robert L. (7)
United States. Forest Service. Northern Region. Forest Environmental Protection (7)
Hard, John S. (6)
Eder, Robert G. (5)
Hagle, Susan K. (5)
Berg, Malcolm J. (4)
Haglund, Steve (4)
Williams, Ralph E. (4)
Franc, G. C. (3)
Livingston, R. Ladd (3)
Underwood, P. W. (3)
United States. Forest Health Protection (3)
United States. Forest Service. Northern Region. Forest Insect And Disease Management (3)
Bell Randall, Carol S. (2)
Jenkins, Michael J. (2)
Johnson, Terri L. (2)
Kegley, Sandra J. (2)
Lockman, I. Blakey (2)
Marsden, Michael A. (2)
Rice, John Leslie (2)
Schwandt, John W. (2)
Stewart, C. A. (2)
Stipe, Lawrence E. (2)
Sturdevant, Nancy J. (2)
Tagestad, Arden (2)
Taylor, Jane E. (2)
Walsh, Natalie (2)
Bissell, Gael (1)
Brown, Doland H. (1)
Drake, L. E. (1)
Ferry, Gardner (1)
Gilligan, Carma J. (1)
Gordon, Clarence C. (1)
Hall, L. D. (1)
Hammer, William P. (1)
Hemel, Dennis R. (1)
Hothem, R. (1)
Karch, Tom (1)
Kissinger, Willard A. (1)
Kohler, Scott (1)
Lewis, Lowell G. (1)
Marks, Gerald (1)
Miller, Bob (1)
Niwa, Christine Gail (1)
Pye, Laurel Hilarie, 1952 (1)
Shipe, Tilford C. (1)
Stein, John D. (1)
Tourangeau, Phillip (1)
United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management (1)
Ward, James D. (1)
Williams, R. E. (1)
Williams, Stephen B. (1)
Date
1973 (27)
1974 (20)
1975 (20)
1979 (20)
1972 (19)
1980 (17)
1977 (16)
1978 (16)
1981 (14)
1976 (13)
1985 (5)
1986 (4)
2000 (3)
1983 (1)
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1970-1979 (151)
1980-1989 (41)
2000-2009 (3)
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application/pdf (195)
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English [eng] (195)
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Technical Report (195)
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Subject
Report (United States. Forest Service. Northern Region. Insect and Disease Management) (67)
Report (United States. Forest Service. Northern Region. Forest Pest Management) (16)
Lodgepole pine -- Diseases and pests -- Montana -- Gallatin National Forest (10)
Mountain pine beetle -- Montana -- Gallatin National Forest (10)
Conifers -- Diseases and pests -- Idaho (9)
Conifers -- Diseases and pests -- Montana (8)
Western spruce budworm -- Montana (8)
Mountain pine beetle -- Montana -- Lolo National Forest (7)
Lodgepole pine -- Diseases and pests -- Montana (6)
Mountain pine beetle -- Kootenai National Forest (Mont. and Idaho) (6)
Mountain pine beetle -- Montana (6)
Insect surveys -- Montana (5)
Lodgepole pine -- Diseases and pests -- Montana -- Flathead National Forest (5)
Western spruce budworm -- Idaho (5)
Conifers -- Diseases and pests -- Idaho -- Nezperce National Forest (4)
Douglas fir -- Diseases and pests -- Montana (4)
Insect surveys -- Idaho (4)
Lodgepole pine -- Diseases and pests -- Kootenai National Forest (Mont. and Idaho) (4)
Lodgepole pine -- Diseases and pests -- Yellowstone National Park (4)
Mountain pine beetle -- Montana -- Flathead National Forest (4)
Mountain pine beetle -- Montana -- Glacier National Park (4)
Mountain pine beetle -- Yellowstone National Park (4)
Ponderosa pine -- Diseases and pests -- Montana -- Flathead Indian Reservation (4)
Trees -- Diseases and pests -- Idaho (4)
Trees -- Diseases and pests -- Montana (4)
Defoliation -- Montana (3)
Douglas fir -- Diseases and pests -- Yellowstone National Park (3)
Douglas fir tussock moth -- Idaho (3)
Douglas fir tussock moth -- Montana (3)
Dwarf mistletoes -- Control -- Montana -- Flathead Indian Reservation (3)
Dwarf mistletoes -- Montana (3)
Ecological succession -- Idaho (3)
Ecological succession -- Montana (3)
Fluorides -- Environmental aspects -- Montana (3)
Forest insects -- Ecology -- Idaho (3)
Forest insects -- Ecology -- Montana (3)
Forest insects -- Idaho (3)
Forest insects -- Montana (3)
Lodgepole pine -- Diseases and pests -- Montana -- Beaverhead National Forest (3)
Lodgepole pine -- Diseases and pests -- Montana -- Lolo National Forest (3)
Mountain pine beetle -- Control -- Montana -- Gallatin National Forest (3)
Mountain pine beetle -- Idaho (3)
Mountain pine beetle -- Montana -- Beaverhead National Forest (3)
Mountain pine beetle -- Montana -- Crow Indian Reservation (3)
Pine butterfly -- Montana (3)
Ponderosa pine -- Diseases and pests -- Montana -- Crow Indian Reservation (3)
Ponderosa pine -- Diseases and pests -- Montana -- Lolo National Forest (3)
Bacillus thuringiensis -- Montana -- Gallatin National Forest (2)
Conifers -- Diseases and pests -- Control -- Montana -- Flathead National Forest (2)
Defoliation -- Idaho (2)
Defoliation -- North Dakota -- Turtle Mountains (2)
Douglas fir -- Diseases and pests -- Flathead River Valley (B.C. and Mont) (2)
Douglas fir tussock moth -- Flathead River Valley (B.C. and Mont) (2)
Douglas fir tussock moth -- Idaho -- Nezperce National Forest (2)
Douglas fir tussock moth -- Viruses -- Idaho (2)
Douglas fir tussock moth -- Washington (State) (2)
Dwarf mistletoes -- Control -- Bitterroot National Forest (Mont. and Idaho) (2)
Forest insects -- Monitoring (2)
Forest surveys (2)
Gelechiidae -- Montana -- Flathead Indian Reservation (2)
Geometridae -- Flathead River Valley (B.C. and Mont) (2)
Green ash -- Diseases and pests -- North Dakota (2)
Insect surveys (2)
Larch casebearer -- Biological control -- Idaho (2)
Larch casebearer -- Biological control -- Montana (2)
Larch casebearer -- Parasites -- Idaho (2)
Larch casebearer -- Parasites -- Montana (2)
Lodgepole pine -- Diseases and pests -- Control -- Montana -- Gallatin National Forest (2)
Lodgepole pine -- Diseases and pests -- Control -- Montana -- Thompson River Watershed (2)
Lodgepole pine -- Diseases and pests -- Control -- Yaak River Watershed (B.C. and Mont.) (2)
Lodgepole pine -- Diseases and pests -- Montana -- Glacier National Park (2)
Lodgepole pine -- Diseases and pests -- Montana -- Lewis and Clark National Forest (2)
Mountain pine beetle -- Control -- Montana (2)
Mountain pine beetle -- Control -- Montana -- Thompson River Watershed (2)
Mountain pine beetle -- Control -- Yaak River Watershed (B.C. and Mont.) (2)
Pests -- Ecology -- Idaho (2)
Pests -- Ecology -- Montana (2)
Pine butterfly -- Montana -- Flathead Indian Reservation (2)
Ponderosa pine -- Diseases and pests -- Control -- Montana (2)
Roots (Botany) -- Diseases and pests -- Montana -- Flathead Indian Reservation (2)
Trees -- Diseases and pests -- Monitoring (2)
Trees -- Diseases and pests -- North Dakota (2)
Variable oak leaf caterpillar -- North Dakota (2)
Western spruce budworm -- Control -- Montana -- Gallatin National Forest (2)
Western spruce budworm -- Idaho -- Clearwater National Forest (2)
Western spruce budworm -- Idaho -- Nezperce National Forest (2)
Whitebark pine -- Diseases and pests -- Yellowstone National Park (2)
Wood borers -- North Dakota (2)
Abies lasiocarpa -- Diseases and pests -- Montana -- Big Belt Mountains (1)
Abies lasiocarpa -- Diseases and pests -- Montana -- Gallatin National Forest (1)
Aerial photography in forestry (1)
Aerial photography in forestry -- Idaho -- Coeur d'Alene National Forest (1)
Aerial spraying and dusting in forestry -- Idaho (1)
Agathis -- Idaho (1)
Agathis -- Montana (1)
Aluminum smelting -- Environmental aspects -- Montana (1)
Armillaria root rot -- Idaho (1)
Armillaria root rot -- Montana (1)
Armillaria root rot -- Montana -- Flathead Indian Reservation (1)
Aspen -- Diseases and pests -- North Dakota -- Turtle Mountains (1)
Bacillus thuringiensis -- North Dakota -- Bismarck Area (1)
Bark beetles -- Idaho (1)
Bark beetles -- Montana (1)
Bark beetles -- Montana -- Big Belt Mountains (1)
Bark beetles -- Montana -- Flathead National Forest (1)
Bark beetles -- Montana -- Lolo National Forest (1)
Benomyl (1)
Blister rust -- Control -- Yellowstone National Park (1)
Blister rust -- Yellowstone National Park (1)
Borers (Insects) -- North Dakota -- Bowman County (1)
Botrytis -- Idaho (1)
Braconidae -- Northwest, Pacific (1)
Canker (Plant disease) -- North Dakota (1)
Canker-worms -- Control -- North Dakota -- Bismarck Area (1)
Chalcid wasps -- Northwest, Pacific (1)
Christmas trees -- Diseases and pests -- Montana (1)
Clearwing moths -- North Dakota (1)
Coal-fired power plants -- Environmental aspects -- Montana (1)
Conifers -- Diseases and pests -- Bitterroot National Forest (Idaho and Mont.) (1)
Conifers -- Diseases and pests -- Idaho -- Clearwater National Forest (1)
Conifers -- Diseases and pests -- Idaho -- Clearwater National Forest. (1)
Conifers -- Diseases and pests -- Idaho -- Nezperce National Forest -- Forecasting (1)
Conifers -- Diseases and pests -- Idaho -- Priest River Experimental Forest (1)
Conifers -- Diseases and pests -- Idaho -- Yoosa Creek Watershed (1)
Conifers -- Diseases and pests -- Kootenai National Forest (Mont. and Idaho) (1)
Conifers -- Diseases and pests -- Montana -- Centennial Valley (1)
Conifers -- Diseases and pests -- Montana -- Flathead Indian Reservation (1)
Conifers -- Diseases and pests -- Montana -- Glacier National Park (1)
Conifers -- Diseases and pests -- Montana -- Lolo National Forest (1)
Conifers -- Diseases and pests -- Rocky Mountains (1)
Conifers -- Effect of acid precipitation on -- Montana -- Anaconda (1)
Conifers -- Effect of fluorides on -- Montana (1)
Conifers -- Effect of pollution on -- Montana (1)
Conifers -- Effect of pollution on -- Montana -- Anaconda (1)
Conifers -- Idaho -- Seedlings (1)
Conifers -- Idaho -- Seedlings -- Losses (1)
Conifers -- Losses -- Bitterroot National Forest (Idaho and Mont.) (1)
Conifers -- Losses -- Montana -- Lolo National Forest (1)
Conifers -- Montana -- Seedlings -- Losses (1)
Conifers -- Seeds -- Diseases and pests -- Idaho (1)
Conifers -- Seeds -- Diseases and pests -- Montana (1)
Conifers -- Wounds and injuries -- Rocky Mountains (1)
Copper smelting -- Environmental aspects -- Montana -- Anaconda (1)
Copper smelting -- Environmental aspects -- Montana -- Anaconda Range (1)
Cronartium ribicola -- Yellowstone National Park (1)
Dead trees -- Measurement (1)
Defoliation -- Bitterroot National Forest (Mont. and Idaho) (1)
Defoliation -- Forecasting -- Idaho (1)
Defoliation -- Forecasting -- Montana (1)
Defoliation -- Idaho -- Clearwater National Forest (1)
Defoliation -- Idaho -- Nezperce National Forest (1)
Defoliation -- Montana -- Flathead Indian Reservation (1)
Defoliation -- Montana -- Lolo National Forest (1)
Douglas fir -- Diseases and pests (1)
Douglas fir -- Diseases and pests -- Bitterroot National Forest (Mont. and Idaho) (1)
Douglas fir -- Diseases and pests -- Control -- Bitterroot National Forest (Idaho and Mont.) (1)
Douglas fir -- Diseases and pests -- Control -- Bitterroot National Forest (Mont. and Idaho) (1)
Douglas fir -- Diseases and pests -- Control -- Idaho -- Nezperce National Forest (1)
Douglas fir -- Diseases and pests -- Control -- Montana -- Cramer Creek Watershed (Missoula County) (1)
Douglas fir -- Diseases and pests -- Idaho -- Clearwater River Watershed (1)
Douglas fir -- Diseases and pests -- Idaho -- Clearwater River, North Fork, Watershed (1)
Douglas fir -- Diseases and pests -- Idaho -- Nezperce National Forest (1)
Douglas fir -- Diseases and pests -- Montana -- Bitterroot National Forest (1)
Douglas fir -- Diseases and pests -- Montana -- Flathead Indian Reservation (1)
Douglas fir -- Diseases and pests -- Montana -- Flathead National Forest (1)
Douglas fir -- Diseases and pests -- Montana -- Gallatin National Forest (1)
Douglas fir -- Diseases and pests -- Montana -- Kootenai National Forest (1)
Douglas fir -- Diseases and pests -- Montana -- Polson area (1)
Douglas fir -- Seedlings (1)
Douglas fir -- Seeds -- Montana (1)
Douglas fir -- Seeds -- Predators of -- Control -- Idaho -- Nezperce National Forest (1)
Douglas fir -- Seeds -- Yellowstone National Park (1)
Douglas fir -- Washington (State) -- Colville National Forest (1)
Douglas fir beetle -- Idaho -- Clearwater River Watershed (1)
Douglas fir beetle -- Idaho -- Clearwater River, North Fork, Watershed (1)
Douglas fir tussock moth -- Biological control -- Idaho (1)
Douglas fir tussock moth -- Eggs -- Idaho (1)
Douglas fir tussock moth -- Eggs -- Montana (1)
Douglas fir tussock moth -- Montana -- Polson area (1)
Douglas fir tussock moth -- Parasites -- Idaho (1)
Douglas fir tussock moth -- Parasites -- Montana (1)
Douglas fir tussock moth -- Viruses -- Montana (1)
Dutch elm disease -- Montana (1)
Dwarf mistletoes -- Bitterroot National Forest (Idaho and Mont.) (1)
Dwarf mistletoes -- Control -- Bitterroot National Forest (Idaho and Mont.) (1)
Dwarf mistletoes -- Control -- Economic aspects -- Northwestern States (1)
Dwarf mistletoes -- Control -- Montana (1)
Dwarf mistletoes -- Control -- Montana -- Bitterroot National Forest (1)
Dwarf mistletoes -- Control -- Montana -- Cramer Creek Watershed (Missoula County) (1)
Dwarf mistletoes -- Control -- Montana -- Deerlodge National Forest (1)
Dwarf mistletoes -- Control -- Montana -- Flathead National Forest (1)
Dwarf mistletoes -- Control -- Montana -- Granite County (1)
Dwarf mistletoes -- Control -- Montana -- Lewis and Clark National Forest (1)
Dwarf mistletoes -- Control -- Northwestern States (1)
Dwarf mistletoes -- Control -- Rocky Mountains (1)
Dwarf mistletoes -- Montana -- Flathead National Forest (1)
Dwarf mistletoes -- Montana -- Kootenai National Forest (1)
Dwarf mistletoes -- Montana -- Lolo National Forest (1)
Engelmann spruce -- Diseases and pests -- Control (1)
Engelmann spruce -- Diseases and pests -- Idaho (1)
Engelmann spruce -- Diseases and pests -- Idaho -- Idaho Panhandle National Forests Region (1)
Engelmann spruce -- Diseases and pests -- Montana -- Flathead National Forest (1)
Engelmann spruce -- Diseases and pests -- Montana -- Gallatin National Forest (1)
Engelmann spruce -- Idaho -- Seedlings (1)
Engelmann spruce -- Seedlings (1)
Forest insects -- Control -- Montana -- Flathead National Forest (1)
Forest insects -- Monitoring -- Data processing (1)
Forest insects -- Montana -- National Bison Range (1)
Forest insects -- Northwestern States (1)
Forest management -- Montana -- Flathead National Forest (1)
Forest surveys -- Data processing (1)
Forest tent caterpillar -- North Dakota -- Turtle Mountains (1)
Forest thinning -- Montana (1)
Forests and forestry -- Montana -- Flathead National Forest (1)
Fungal diseases of plants -- Clark Fork (Mont. and Idaho) (1)
Fungal diseases of plants -- Idaho (1)
Fungal diseases of plants -- Montana (1)
Fusarium diseases of plants (1)
Gelechiidae -- Montana -- Lolo National Forest (1)
Geometridae -- Flathead River Valley (B.C. and Mont.) (1)
Glacier National Park (Mont.) (1)
Grand fir -- Diseases and pests -- Control -- Idaho -- Nezperce National Forest (1)
Grand fir -- Seeds -- Predators of -- Control -- Idaho -- Nezperce National Forest (1)
Green ash -- Diseases and pests -- North Dakota -- Bowman County (1)
Hardwoods -- Diseases and pests -- North Dakota -- Turtle Mountains (1)
Hemlock looper -- Eggs -- Counting -- Idaho (1)
Hemlock looper -- Northwest, Pacific (1)
Insect pests -- Control -- Idaho -- Nezperce National Forest (1)
Insect pests -- Montana -- National Bison Range (1)
Insect pests -- North Dakota (1)
Insect surveys -- Data processing (1)
Insect surveys -- Montana -- Flathead National Forest (1)
Insect surveys -- North Dakota (1)
Insecticides -- Idaho -- Nezperce National Forest (1)
Insecticides -- Montana -- Helena National Forest (1)
Ips -- Montana -- Garnet Mountain (1)
Larch casebearer -- Idaho (1)
Larch casebearer -- Montana (1)
Larch casebearer -- Northwestern States. (1)
Larch casebearer -- Parasites -- Northwest, Pacific (1)
Larch casebearer -- Washington (State) (1)
Larches -- Diseases and pests -- Biological control -- Idaho (1)
Larches -- Diseases and pests -- Biological control -- Montana (1)
Larches -- Diseases and pests -- Northwestern States. (1)
Leptographium root diseases of conifers -- Montana -- Flathead Indian Reservation (1)
Limber pine -- Pruning -- Yellowstone National Park (1)
Lodgepole pine -- Diseases and pests -- Clark Fork (Mont. and Idaho) (1)
Lodgepole pine -- Diseases and pests -- Control -- Montana (1)
Lodgepole pine -- Diseases and pests -- Control -- Montana -- Cramer Creek Watershed (Missoula County) (1)
Lodgepole pine -- Diseases and pests -- Control -- Montana -- Deerlodge National Forest (1)
Lodgepole pine -- Diseases and pests -- Control -- Montana -- Granite County (1)
Lodgepole pine -- Diseases and pests -- Montana -- Big Belt Mountains (1)
Lodgepole pine -- Diseases and pests -- Montana -- Kootenai National Forest (1)
Lodgepole pine -- Diseases and pests -- Montana -- Shook Mountain (1)
Lodgepole pine -- Diseases and pests -- Rocky Mountains (1)
Lodgepole pine -- Effect of fluorides on -- Montana (1)
Lodgepole pine -- Effect of pollution on -- Montana (1)
Lodgepole pine -- Losses -- Montana (1)
Lodgepole pine -- Losses -- Montana -- Measurement (1)
Lodgepole pine -- Sampling -- Montana (1)
Lodgepole pine -- Thinning -- Montana (1)
Magdalis -- Montana -- Lewis and Clark National Forest (1)
Mountain pine beetle -- Bitterroot National Forest (Idaho and Mont) (1)
Mountain pine beetle -- Control -- Montana -- Lolo National Forest (1)
Mountain pine beetle -- Larvae -- Wintering -- Montana (1)
Mountain pine beetle -- Montana -- Big Belt Mountains (1)
Mountain pine beetle -- Montana -- Blackfeet Indian Reservation (1)
Mountain pine beetle -- Montana -- Garnet Mountain (1)
Mountain pine beetle -- Montana -- Lewis and Clark National Forest (1)
Mountain pine beetle -- Montana -- Little Rocky Mountains (1)
Mountain pine beetle -- Montana -- Shook Mountain (1)
Mountain pine beetles -- Montana (1)
Mountain pine beetles -- Montana -- Centennial Valley (1)
Mountain plants -- Ecology -- Montana -- Anaconda Range (1)
Mountain plants -- Effect of pollution on -- Montana -- Anaconda Range (1)
Neodiprion -- Kootenai National Forest (Mont. and Idaho) (1)
Neophasia -- Kootenai National Forest (Mont. and Idaho) (1)
Neophasia -- Montana (1)
Neophasia -- Montana -- Flathead Indian Reservation (1)
Operophtera -- North Dakota -- Turtle Mountains (1)
Organophosphorus compounds -- Idaho -- Nezperce National Forest (1)
Phoma -- Idaho (1)
Pine -- Diseases and pests -- Idaho (1)
Pine -- Diseases and pests -- Kootenai National Forest (Mont. and Idaho) (1)
Pine -- Diseases and pests -- Montana (1)
Pine -- Diseases and pests -- Montana -- Bitterroot River Valley (1)
Pine -- Diseases and pests -- Montana -- Lolo National Forest (1)
Pine -- Diseases and pests -- Montana -- Missoula County (1)
Pine butterfly -- Bitterroot National Forest (Mont. and Idaho) (1)
Pine butterfly -- Idaho -- Nezperce National Forest (1)
Pine butterfly -- Kootenai National Forest (Mont. and Idaho) (1)
Pine butterfly -- Montana -- Bitterroot River Valley (1)
Pine butterfly -- Montana -- Lolo National Forest (1)
Pine butterfly -- Montana -- Missoula county (1)
Pine engraver -- Idaho -- Idaho Panhandle National Forests Region (1)
Pine needle-sheath miner -- Montana (1)
Plants -- Effect of air pollution on (1)
Plants -- Effect of sulphur dioxide on (1)
Plants -- Effects of fluorides on (1)
Ponderosa pine -- Diseases and pests (1)
Ponderosa pine -- Diseases and pests -- Bitterroot National Forest (Mont. and Idaho) (1)
Ponderosa pine -- Diseases and pests -- Control -- Idaho (1)
Ponderosa pine -- Diseases and pests -- Control -- Montana -- Lolo National Forest (1)
Ponderosa pine -- Diseases and pests -- Kootenai National Forest (Mont. and Idaho) (1)
Ponderosa pine -- Diseases and pests -- Montana (1)
Ponderosa pine -- Diseases and pests -- Montana -- Blackfeet Indian Reservation (1)
Ponderosa pine -- Diseases and pests -- Montana -- Glacier National Park (1)
Ponderosa pine -- Diseases and pests -- Montana -- Lewis and Clark National Forest (1)
Ponderosa pine -- Diseases and pests -- Montana -- Little Rocky Mountains (1)
Ponderosa pine -- Diseases and pests -- Montana -- Shook Mountain (1)
Ponderosa pine -- Effect of air pollution on -- Montana (1)
Ponderosa pine -- Frost damage -- Montana (1)
Ponderosa pine -- Seedlings (1)
Ponderosa pine -- Thinning -- Montana (1)
Ponderosa pine -- Thinning -- Montana -- Lolo National Forest (1)
Ponderosa pine -- Washington (State) -- Colville National Forest (1)
Ponderosa pine -- Wounds and injuries -- Montana (1)
Prionoxystus robiniae -- North Dakota (1)
Reforestation -- Idaho (1)
Reforestation -- Montana (1)
Roots (Botany) -- Diseases and pests -- Control (1)
Roots (Botany) -- Diseases and pests -- Idaho (1)
Roots (Botany) -- Diseases and pests -- Idaho -- Coeur d'Alene National Forest -- Remote sensing (1)
Roots (Botany) -- Diseases and pests -- Idaho -- Nezperce National Forest (1)
Scots pine -- Diseases and pests -- Montana (1)
Seedlings -- Losses -- Idaho (1)
Seedlings -- Losses -- Montana (1)
Siberian elm -- Diseases and pests -- Control -- North Dakota -- Bismarck Area (1)
Spruce beetle -- Idaho -- Idaho Panhandle National Forests Region (1)
Spruce beetle -- Montana -- Flathead National Forest (1)
Sulphur dioxide -- Environmental aspects -- Montana -- Anaconda (1)
Tortricidae -- Control -- Idaho (1)
Tortricidae -- Control -- Montana (1)
Tree farms -- Idaho (1)
Tree farms -- Montana (1)
Trees -- Diseases and pests -- Control -- Economic aspects -- Northwestern States (1)
Trees -- Diseases and pests -- Control -- Northwestern States (1)
Trees -- Diseases and pests -- Monitoring -- Data processing (1)
Trees -- Diseases and pests -- Montana -- Bozeman (1)
Trees -- Diseases and pests -- Northwestern States (1)
Viral insecticides -- Idaho (1)
Western hemlock -- Diseases and pests -- Flathead River Valley (B.C. and Mont) (1)
Western larch -- Diseases and pests -- Biological control -- Idaho (1)
Western larch -- Diseases and pests -- Biological control -- Montana (1)
Western larch -- Diseases and pests -- Idaho (1)
Western larch -- Diseases and pests -- Montana (1)
Western larch -- Diseases and pests -- Montana -- Flathead National Forest (1)
Western larch -- Diseases and pests -- Montana -- Kootenai National Forest (1)
Western larch -- Diseases and pests -- Washington (State) (1)
Western spruce budworm -- Control -- Montana -- Cramer Creek Watershed (Missoula County) (1)
Western spruce budworm -- Control -- Montana -- Helena National Forest (1)
Western spruce budworm -- Effect of weather on -- Idaho (1)
Western spruce budworm -- Effect of weather on -- Montana (1)
Western spruce budworm -- Idaho -- Clearwater National Forest. (1)
Western spruce budworm -- Idaho -- Nezperce National Forest -- Forecasting (1)
Western spruce budworm -- Idaho -- Yoosa Creek Watershed (1)
Western spruce budworm -- Montana -- Flathead Indian Reservation (1)
Western spruce budworm -- Rocky Mountains (1)
Western spruce budworm -- Yellowstone National Park (1)
White pine -- Diseases and pests -- Control -- Yellowstone National Park (1)
Windbreaks, shelterbelts, etc. -- North Dakota (1)
Yellowstone National Park (1)
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