Subject
- 4-H clubs6
- Agricultural extension work -- Evaluation2
- Beef cattle2
- Cattle -- Feeding and feeds2
- Education -- Evaluation2
- Forests and forestry -- Research -- Oregon2
- Home economics extension work -- Evaluation2
- Hunger2
- Reforestation -- Oregon2
- Soils -- Nitrogen content -- Oregon, Western2
- Soils -- Nitrogen content -- Washington (State), Western2
- 4-H clubs -- Curricula1
- 4-H clubs -- Curricula -- Oregon1
- Acid soils -- Oregon1
- Agricultural conservation -- Bibliography1
- Agricultural ecology -- Bibliography1
- Agricultural pests -- Integrated control1
- Agriculture -- Economic aspects -- Oregon1
- Agriculture -- Oregon1
- Agriculture -- Oregon -- Statistics1