The mining districts of the western United States,
Hill, James M. 1884-
The mining districts of the western United States, by James M. Hill, with a geologic introduction, by Waldemar Lindgren. - Washington, Govt. Print. Off., 1912. - 309 p. illus., XVI fold. maps. 24 cm. - United States Geological survey. Bulletin 507 .
gs 12000485
Mines and mineral resources--United States.
QE75 / .B9 no. 507
The mining districts of the western United States, by James M. Hill, with a geologic introduction, by Waldemar Lindgren. - Washington, Govt. Print. Off., 1912. - 309 p. illus., XVI fold. maps. 24 cm. - United States Geological survey. Bulletin 507 .
gs 12000485
Mines and mineral resources--United States.
QE75 / .B9 no. 507