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- Oregon State University. Marine Science Center 37
- Hatfield Marine Science Center 16
- Universities and colleges--Faculty 13
- Laboratories 10
- Marine aquariums 8
- Agronomic Crop Science 6
- Cowan, J. Ritchie (John Ritchie) 6
- Research vessels 6
- Bluegrasses 5
- Bridges 5
- Harvesting machinery 5
- Newport (Or.) 5
- Piers 4
- Stewart, Nelson E. 4
- College buildings 3
- Exhibitions 3
- Oceanography 3
- Oregon State University. Extension Service 3
- United States. Agricultural Research Advisory Committees 3
- Universities and colleges--Alumni and alumnae 3