Subject
- Potatoes -- Oregon -- Klamath County12
- Central Oregon Agricultural Research Center -- Periodicals10
- Field experiments -- Oregon -- Klamath County10
- Agriculture -- Research -- Oregon, Central -- Periodicals9
- Field experiments -- Oregon, Central -- Periodicals9
- Arid regions agriculture -- Oregon5
- Columbia Basin Agricultural Research Center -- Periodicals5
- Agriculture -- Research -- Columbia River Watershed4
- Agricultural experiment stations -- Research -- Oregon -- Malheur County2
- Agriculture -- Oregon -- Malheur County -- Field experiments2
- Alfalfa -- Fertilizers -- Oregon, Western2
- Barley -- Oregon -- Klamath County2
- Range management -- Oregon2
- Wheat -- Oregon -- Klamath County2
- 4-H clubs1
- Agricultural experiment stations -- Oregon -- Union -- History1
- Agriculture -- Research -- Columbia River Basin (Or. and Wash.) -- Periodicals1
- Agriculture -- Research -- Oregon -- Union -- History1
- Agriculture -- Research -- Oregon, Eastern1
- Ammonia -- Environmental aspects1