Subject
- Wheat -- Breeding -- International cooperation2
- Wheat -- Oregon -- Field experiments2
- Wheat -- Varieties -- Statistics2
- Agriculture -- Research -- On-farm -- Oregon1
- Agriculture -- Research -- Oregon -- On-farm1
- Bindweed -- Control -- West (U.S.)1
- Field experiments -- Oregon1
- Forest management1
- Grazing districts -- Economic aspects -- West (U.S.)1
- Salvage logging1
- Seeds -- Processing -- Labor productivity1
- Trees -- Wounds and injuries1
- Water resources development -- Economic aspects1