Subject
- Industrial arts -- Study and teaching14
- Soils -- Oregon11
- Douglas fir10
- Herbicides10
- Home economics -- Study and teaching10
- Wheat10
- Clothing and dress9
- Industrial arts9
- Pear7
- Vitamin B67
- Canning and preserving6
- Douglas fir beetle6
- Soil microbiology6
- Cattle -- Feeding and feeds5
- Food -- Effect of radiation on5
- Home economics teachers5
- Insecticides5
- Phenols5
- Salmonella5
- Sheep -- Feeding and feeds5