Contributors: Albert LaSala, B. L. Bigwood, Claude Martin Roberts, George William Moore, Henry Lee Berryhill (Jr.), Howard R. Smith, John David Love, Joseph Thomas Callahan, Marvin Bertram Scher, Maurice John Mundorff, Ralph S. Mason, Roy Lee Griggs, Tyrus B. Dover, James Montgomery Weigle, Lois Emily Randall, M. P. Thomas, Murray Levish, Arthur Johnson, Glen D. Holmberg,
2 ebooks
Publisher: U.S. Department of the Interior, Geological Survey
Published: 1949
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