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- Oregon State University. Extension Service 13
- Agriculture 5
- Universities and colleges--Faculty 5
- Harvey, Frances Madeleine 4
- Roads 4
- Canneries 3
- Children 3
- Forests and forestry 3
- 4-H clubs 2
- Bridges 2
- Canning and preserving--Equipment and supplies 2
- Food industry and trade 2
- Mines and mineral resources 2
- Automobiles 1
- Camps 1
- Canned foods 1
- Chickens 1
- Clover 1
- Cutover lands 1
- Dairy cattle 1
