Nickles, John M. (John Milton), 1859-1945.
Bibliography of North American geology, 1929 and 1930 / by John M. Nickles.
Washington, D.C. : U.S. G.P.O., 1931.
Includes index.
List of serials examined: p. 3-8.
Paleontology -- North America -- Bibliography.
Petrology -- North America -- Bibliography.
Mineralogy -- North America -- Bibliography.
Geology -- North America -- Bibliography.
Geological Survey (U.S.)
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