01112cam a22002771 4500 gs 32000079 DLC 20260227111336.0 800611s1932 dcuabf b f001 0 eng gs 32000079 (OCoLC)6408311 DLC ICharE OCoLC DLC QE75 .B9 no. 838 TN911 .M3 Mansfield, George Rogers, 1875-1947. Nitrate deposits of the United States, by G.R. Mansfield and Leona Boardman. Washington, U.S. Govt. Print. Off., 1932. vi, 107 p. incl. illus., maps, tables, profiles, 11 pl. (part fold., incl. maps) 23 cm. U.S. Geological survey. Bulletin 838 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. Nitrates. Boardman, Leona, 1894-1957, joint author. 26950 26950