- Range plants -- Oregon7
- Agricultural extension work -- Oregon, Eastern1
- Agriculture -- Research -- Oregon, Eastern1
- Agriculture research stations -- Oregon, Eastern1
- Alfalfa -- Fertilizers -- Oregon, Eastern1
- Barley -- Varieties -- Oregon -- Umatilla County -- Testing1
- Barley -- Varieties -- Oregon -- Union County -- Testing1
- Barley -- Varieties -- Oregon -- Wallowa County -- Testing1
- Barley -- Varieties -- Oregon, Eastern -- Testing1
- Clover -- Fertilizers -- Oregon, Eastern1
- Dissertations, Academic -- United States -- Bibliography -- Catalogs1
- Land use -- Oregon -- Lake County -- Planning1
- Land use -- Oregon -- Union County -- Planning1
- Land use, Rural -- Oregon -- Lake County -- Planning1
- Land use, Rural -- Oregon -- Union County -- Planning1
- Oats -- Varieties -- Oregon -- Umatilla County -- Testing1
- Oats -- Varieties -- Oregon -- Union County -- Testing1
- Oats -- Varieties -- Oregon -- Wallowa County -- Testing1
- Oats -- Varieties -- Oregon, Eastern -- Testing1
- Oregon -- Biography -- Indexes1