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Author/Creator
- Geological Survey (U.S.)7
- Fullerton, David S.3
- Richmond, Gerald Martin, 1914-2
- Smith, James G., 1939-2
- Chin, John L.1
- Gadd, N. R.1
- Geological Survey of Canada1
- Hartshorn, Joseph H. (Joseph Harold), 1922-1
- Minnesota Geological Survey1
- Pennsylvania. Bureau of Topographic and Geologic Survey1
- Sherrod, David R.1
- Sims, P. K. (Paul Kibler), 1918-20111
- University of Massachusetts at Amherst. Department of Geology and Geography1