Subject
- Industrial arts -- Study and teaching69
- Home economics -- Study and teaching44
- 4-H clubs26
- Beef cattle -- Feeding and feeds16
- Nutrition -- Study and teaching16
- Beef cattle -- Nutrition15
- Mathematics -- Study and teaching14
- Teaching -- Aids and devices13
- Nutrition -- Study and teaching (Elementary)11
- Science -- Study and teaching11
- Agriculture -- Study and teaching10
- Expanded Food and Nutrition Education Program (U.S.)10
- Proteins in animal nutrition10
- Biology -- Study and teaching9
- Visual education9
- Agriculture -- Study and teaching -- Oregon8
- Beef cattle -- Breeding8
- Biology -- Study and teaching (Secondary)8
- Dairy cattle -- Feeding and feeds8
- Agriculture -- Oregon -- Experimentation7