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- Geological Survey (U.S.)✖[remove]224
- Ambroziak, Russell A.6
- Du Bray, E. A.5
- Causey, J. Douglas4
- Soller, D. R. (David R.)4
- Abston, C. C. (Carl C.)3
- Alexander, Richard B.3
- Duval, Joseph S.3
- Gap Analysis Program (U.S.)3
- Geological Survey (U.S.). National Mapping Division3
- Helley, Edward J.3
- Huber, Jeff3
- Hubert, Marilyn L.3
- Kincaid, Harold L.3
- Mac Lachlan, M. E.3
- Murdock, Cynthia R.3
- Pilcher, Steven H.3
- Singer, D. A.3
- U.S. Fish and Wildlife Service3
- Wilson, Anna B. (Anna Burack)3