Subject
- Columbia Basin Agricultural Research Center -- Periodicals6
- Agriculture -- Research -- Columbia River Watershed4
- Arid regions agriculture -- Oregon3
- Land use -- Oregon -- Linn County -- Planning3
- Land use, Rural -- Oregon -- Linn County -- Planning3
- Regional planning -- Oregon -- Linn County3
- Agricultural experiment stations -- Oregon2
- Agriculture -- Research -- Lower Columbia River Valley (Or. and Wash.) -- Periodicals2
- Coast changes -- Oregon2
- Crops -- Research -- Lower Columbia River Valley (Or. and Wash.) -- Periodicals2
- Eastern Oregon Agricultural Research Center -- Periodicals2
- Irrigation farming -- Lower Columbia River Valley (Or. and Wash.) -- Periodicals2
- Land use -- Oregon -- Benton County -- Planning2
- Land use -- Oregon -- Klamath County -- Planning2
- Land use -- Oregon -- Yamhill County -- Planning2
- Land use, Rural -- Oregon -- Benton County -- Planning2
- Land use, Rural -- Oregon -- Klamath County -- Planning2
- Land use, Rural -- Oregon -- Yamhill County -- Planning2
- Oregon Agricultural Experiment Station2
- Regional planning -- Oregon -- Benton County2