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Author
- Geological Survey (U.S.)537
- Geological Survey of Canada40
- Marshall, C. H.17
- Hackman, Robert J.16
- Thorsteinsson, R.14
- Detterman, J. S.13
- Roehler, Henry W.13
- Taylor, Frederick C.13
- Darton, Nelson Horatio, 1865-194812
- Campbell, Marius R. (Marius Robinson), 1858-19409
- Hansen, Wallace R., 1920-9
- McQueen, Kathleen9
- Soister, Paul E.9
- Hose, Richard Kenneth, 1920-8
- Krieger, Medora Louise Hooper, 1905-19948
- Rowley, Peter D.8
- Cass, John T.7
- Koteff, Carl7
- Minard, James P.7
- Pierce, William Gamewell, 1904-7
