Subject
- Agriculture -- Research -- Oregon3
- Forests and forestry -- Northwest, Pacific3
- Forests and forestry -- Research -- Northwest, Pacific3
- Milk yield3
- Dairy cattle -- Feeding and feeds2
- Forest reserves -- United States -- Recreational use2
- Forests and forestry -- Oregon2
- Land use -- Oregon -- Clatsop County -- Planning2
- Land use -- Oregon -- Klamath County -- Planning2
- Land use, Rural -- Oregon -- Klamath County -- Planning2
- Liming of soils -- Oregon2
- Oregon Agricultural Experiment Station2
- Pacific Northwest Forest Experiment Station (Portland, Or.)2
- Regional planning -- Oregon -- Klamath County2
- Agricultural experiment stations -- Oregon1
- Agricultural mechanics -- California1
- Agriculture -- Oregon1
- Alfalfa as feed1
- Alkali lands1
- Appalachian Mountains -- Guidebooks1