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Author
- Geological Survey (U.S.)11
- Brown, Glen F. (Glen Francis), 1911-20013
- McQueen, Kathleen3
- Geological Survey of Canada2
- Bramkamp, Richard A.1
- Castle, Robert O.1
- Condon, W. H. (William H.)1
- Karlstrom, Thor N. V., 1920-1
- McIntosh, Willard L.1
- Monroe, Watson Hiner, 1907-1
- Pomeroy, John S., 1929-1
- Radbruch-Hall, Dorothy H., 1920-1
