00823cam a22002531 4500 gs 56000052 DLC 20260227111403.0 770120s1954 xx 000 0 eng c gs 56000052 (OCoLC)2690564 U.S. Geol. Survey. Library. TxEU DLC premarc TN948.S6 M8 Murphy, Thomas Daniel, 1905- Silica resources of Clark County, Nevada. Reno, Nevada Bureau of Mines, 1954. ix, 33 p. maps (1 fold.) tables. 23 cm. Nevada Bureau of Mines. Bulletin 55 Prepared cooperatively by the U.S. Geological Survey. "Literature cited": p. 24-25. Silica. Mines and mineral resources Nevada Clark County. 29025 29025