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Author
- Geological Survey (U.S.)280
- U.S. Fish and Wildlife Service29
- Kokuritsu Kyokuchi Kenkyūjo.15
- Norris, Donald Kring, 1924-15
- United States. Central Intelligence Agency14
- Berryhill, Henry L., Jr. (Henry Lee), 1921-201310
- Miller, Todd S.9
- United States. Forest Service. Eastern Region8
- Ward, Willard E.8
- United States. Forest Service. Northern Region7
- Geological Survey of Canada6
- Canada. Mapping and Charting Establishment5
- Scott, David Holcomb, 1916-5
- Newfoundland. Mineral Development Division4
- Price, Don, 1929-4
- Starnico, P.T.4
- United States. Forest Service4
- United States. Forest Service. Pacific Northwest Region3
- Daniels, David L. (David Lee), 1937-2
- Duigon, Mark T.2
