Books+ Search Results
Author
Hayes, E. P.
Published
Washington, D.C. : U.S. Dept. of Commerce, Bureau of Mines, 1933.
Online
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
Author
Powers, Michael H.
Published
[Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2004.
Location
Yale Internet Resource >> None
Format
Books / Online