... Common minerals and rocks, their occurrence and uses,
George, Russell D., 1866-
Common minerals and rocks, their occurrence and uses, by R. D. George. - Denver, Colo., Eames bros., state printers, 1917. - 463 p. illus., fold. map, diagrs. 24 cm. - Colorado, Geological Survey, Bulletin 12 .
gs 18000077
Mineralogy.
Petrology.
QE91 / .A4 no. 12
Common minerals and rocks, their occurrence and uses, by R. D. George. - Denver, Colo., Eames bros., state printers, 1917. - 463 p. illus., fold. map, diagrs. 24 cm. - Colorado, Geological Survey, Bulletin 12 .
gs 18000077
Mineralogy.
Petrology.
QE91 / .A4 no. 12