Descriptor
| Biology | 3 |
| Ecology | 3 |
| Paleontology | 3 |
| History | 2 |
| Agriculture | 1 |
| American Indians | 1 |
| Archaeology | 1 |
| Earth Science | 1 |
| Geographic Distribution | 1 |
| Geology | 1 |
| Physical Environment | 1 |
| More ▼ | |
Source
| Biosci | 3 |
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Martin, Paul S. – Biosci, 1970
Descriptors: Biology, Ecology, Geology, Paleontology
Hester, James J. – Biosci, 1970
Descriptors: American Indians, Archaeology, Biology, Ecology
Wright, Jr., H. E. – Biosci, 1970
Descriptors: Agriculture, Biology, Earth Science, Ecology
