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Author/Creator
- Geological Survey (U.S.)107
- United States. National Oceanic and Atmospheric Administration19
- Baker, Jessica L.17
- Unger, Tanya S.17
- Valentine, Page C.17
- United States. Central Intelligence Agency16
- National Atlas & Thematic Mapping Organisation (India)12
- State Geological and Natural History Survey of Connecticut10
- Nag, Prithvish9
- Ryder, Robert T.7
- Poppe, Lawrence J.6
- United States. Bureau of the Census6
- United States. Bureau of the Census. Geography Division6
- Allen, John Logan, 1941-5
- Butman, Bradford5
- United States. Soil Conservation Service5
- Paṇḍyā, Alpā Kauśika4
- Koteff, Carl3
- Pandya, Kaushik3
- Reagor, B. Glen3