00706cam a22002291 4500 gs 13000440 DLC 20260227111314.0 720727s1913 xx 000 0 eng gs 13000440 (OCoLC)367070 DLC OKentU DLC QE91 .A4 no. 6 QE431 .G44 1913 George, Russell D., 1866- Common minerals and rocks, their occurrence and uses, by R. D. George. Denver, Col., The Smith-Brooks printing co., 1913. 406 p. illus. 24 cm. Colorado. Geological survey. Bulletin 6 Mineralogy Colorado. Petrology Colorado. 25262 25262