TY  - BOOK
AU  - Hewett,Donnel Foster
TI  - Mineral resources of the region around Boulder dam,
T2  - U.S. Geological survey. Bulletin 871
AV  - QE75 .B9 no. 871
PY  - 1936///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Mines and mineral resources
KW  - Arizona
KW  - California
KW  - Nevada
N1  - At head of title: United States Department of the Interior, Harold L. Ickes, Secretary, Geological survey. W.C. Mendenhall, director; Bibliographical foot-notes
ER  -