00709cam a22002291 4500 gs 18000077 DLC 20260227111322.0 750804s1917 xx 000 0 eng gs 18000077 (OCoLC)1508617 DLC FMU DLC QE91 .A4 no. 12 QE431 .G44 1917 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 Mineralogy. Petrology. 25821 25821