Subject
- Cropping systems -- Economic aspects -- Sri Lanka1
- Cropping systems -- Sri Lanka -- Decision-making1
- Deschutes River (Or.) -- Water rights1
- Endangered species -- Law and legislation -- Economic aspects -- Oregon -- Upper Klamath Lake Watershed1
- Farmers -- Oregon -- Willamette River Valley1
- Floods -- Oregon -- Echo Meadows -- Econometric models1
- Groundwater -- Economic aspects -- Oregon -- Upper Klamath Lake Watershed1
- Irrigation -- Economic aspects -- Oregon -- Malheur County1
- Irrigation -- Oregon -- Echo Meadows -- Econometric models1
- Irrigation efficiency -- Oregon -- Willamette River Valley1
- Irrigation farming -- Economic aspects -- Oregon1
- Irrigation farming -- Economic aspects -- Oregon -- Malheur County1
- Irrigation farming -- Economic aspects -- Oregon -- Upper Klamath Lake Watershed1
- Irrigation farming -- Mathematical models1
- Irrigation farming -- Sri Lanka1
- Irrigation laws -- Oregon1
- Irrigation laws -- United States1
- Irrigation water -- Economic aspects -- Oregon -- Milton-Freewater1
- Irrigation water -- Economic aspects -- Oregon -- Upper Klamath Lake Watershed1
- Irrigation water -- Oregon -- Deschutes River -- Public opinion1