Subject
- Fertilizers2
- Agriculture -- Economic aspects1
- Agriculture -- Economic aspects -- China1
- Agriculture -- Economic aspects -- Oregon1
- Agriculture -- Economic aspects -- Oregon -- Jefferson County1
- Alkali lands1
- Beef cattle1
- Cattle -- Feeding and feeds.1
- Cattle -- Oregon1
- Columbia Basin Project (U.S.)1
- Farm management1
- Grazing1
- Irrigation -- Oregon1
- Irrigation -- Oregon -- Jefferson County1
- Irrigation farming1
- Klong Kraing Krai (Thailand) -- Economic conditions1
- Pacific yew -- Oregon1
- Pastures1
- Phosphates1
- Phosphorus1