TY  - BOOK
AU  - Mansfield,George Rogers
AU  - Boardman,Leona
TI  - Nitrate deposits of the United States,
T2  - U.S. Geological survey. Bulletin 838
AV  - QE75 .B9 no. 838
PY  - 1932///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Nitrates
N1  - 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
ER  -