Subject
- Columbia Basin Agricultural Research Center -- Periodicals15
- Agriculture -- Research -- Columbia River Watershed13
- Forests and forestry -- Northwest, Pacific12
- Forests and forestry -- Research -- Northwest, Pacific9
- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)9
- Dissertations, Academic -- United States -- Bibliography -- Catalogs6
- Oregon State University -- Dissertations -- Bibliography -- Catalogs5
- Mineral industries -- Oregon4
- Natural gas -- Prospecting -- Oregon4
- Petroleum -- Prospecting -- Oregon4
- Geothermal resources -- Oregon3
- Arid regions agriculture -- Oregon2
- Dissertations, Academic -- United States -- Bibliography2
- Eastern Oregon Agricultural Research Center -- Periodicals2
- Forest ecology -- West (U.S.)2
- Forestry research -- Northwest, Pacific2
- Forests and forestry -- United States -- Bibliography2
- Geology -- Oregon -- Field work2
- Hydrography -- Oregon -- Pacific Coast2
- Metallurgy -- Oregon2