Subject
- 4-H clubs740
- Agricultural pests -- Control -- Congresses202
- Potatoes -- Oregon -- Klamath County156
- Vegetable gardening -- Oregon114
- Herbicides107
- Fisheries -- Oregon96
- Agriculture -- Oregon93
- Game and game-birds -- Oregon87
- Game protection -- Oregon87
- Range plants -- Oregon78
- Weeds -- Control78
- Forests and forestry -- Oregon75
- Forests and forestry -- Research -- Oregon72
- Forests and forestry -- Northwest, Pacific69
- Reforestation -- Oregon66
- Douglas fir50
- Fisheries -- Economic aspects50
- Fishing boats -- Economic aspects49
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley44
- Cattle -- Feeding and feeds41