Nitrate deposits of the United States - Mansfield, George Rogers, 1875-1947.; Boardman, Leona, 1894-1957 (Washington, U.S. Govt. Print. Off., 1932)
At head of title: United States Department of the Interior. Ray Lyman Wilbur, secretary, Geological survey. W.C. Mendenhall director.
One folded map in pocket.
"United States Geological survey publications on nitrate."- p. 101.
Bibliographical foot-notes.
Keywords: Nitrates