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Author/Creator
- Geological Survey (U.S.)[remove]36
- Walsh, Gregory J.7
- Drake, Avery Ala, 1927-6
- Massachusetts. Geological Survey5
- New Jersey Geological Survey5
- Aleinikoff, John Nicholas3
- Billingsley, George H.3
- Burton, William C. (William Chapin), 1952-3
- Dennen, William H.3
- Hualapai Indian Tribe of the Hualapai Indian Reservation, Arizona3
- Massachusetts. Department of Public Works3
- United States. Bureau of Indian Affairs3
- Day, Warren C.2
- Dorais, Michael J.2
- Huntoon, Peter W.2
- Ratcliffe, Nicholas M. (Nicholas Morley), 1938-2
- United States. National Park Service2
- Wenrich, Karen J.2
- Wones, David R.2
- Barton, Gary J.1