Subject
- Animal-plant relationships -- Blue Mountains (Or. and Wash.)1
- Bighorn sheep -- Oregon -- Habitat1
- Blue Mountains (Or. and Wash.)1
- Douglas fir -- Oregon -- Willamette River Valley1
- Forest ecology -- Blue Mountains (Or. and Wash.)1
- Forest reserves -- Oregon -- Ochoco National Forest1
- Grazing -- Oregon -- Willamette River Valley1
- Growth (Plants) -- Measurement -- Handbooks, manuals, etc.1
- Habitat (Ecology)1
- Herbivores -- Ecology -- Mountains (Or. and Wash.)1
- Land use -- Oregon -- Willamette River Valley1
- Mule deer -- Oregon -- Habitat1
- Oregon oak -- Oregon -- Willamette River Valley1
- Plant communities -- Oregon1
- Pronghorn -- Oregon -- Habitat1
- Range management -- Oregon1
- Rangelands -- Oregon -- Willamette River Valley1
- Riparian rights -- Oregon1
- Sage grouse -- Oregon -- Habitat1
- Trees (Growth) -- Measurement -- Handbooks, manuals, etc.1