For sale by the Supt. of Docs., U.S. G.P.O.,
Suggestions to authors of the reports of the United States Geological Survey
Bishop, Elna E.
Eric, John Howard, 1914-
Geological Survey (U.S.)
by Elna E. Bishop ... et al. ; John H. Eric, coordinator.
Suggestions to authors of the reports of the United States Geological Survey