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- Oregon--History 205
- Thomas Condon 205
- University of Oregon 205
- Lectures and lecturing 161
- Sagan, Carl, 1934-1996 106
- Astronomy 88
- United States. National Aeronautics and Space Administration 65
- Drake, Charles L. 55
- Geology 55
- College teachers 40
- Charts, diagrams, etc 39
- Portraits 35
- Fossils 17
- Students 13
- Portraits, Group 8
- Rivers 5
- Planets 4
- Beatie, Jennie Harris 3
- Boats 3
- Children 3