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- Agriculture 214
- Universities and colleges--Periodicals 169
- Croplands 9
- Experiments 7
- Meetings 4
- Wheat 4
- Cauthorn Hall 3
- College buildings 3
- Corn 3
- Fairbanks Hall 3
- Pears 3
- Plants--Wounds and injuries 3
- Alfalfa 2
- Pears--Diseases and pests 2
- Waldo Hall 2
- Dipsacaceae 1
- Irrigation 1
- Orchards 1
- Oregon Agricultural College 1
- Plants--Effect of shade on 1