00885cam a22002531 4500 gs 52000143 DLC 20260227111358.0 790801s1952 mtuab s000 0 eng c gs 52000143 (OCoLC)5230677 U.S. Geol. Survey. Libr. TxEU WaChenE DLC premarc n-us-mt HD9539.T83 U66 McGlashan, Donald W. The Tungsten situation in Montana as a factor in national defense, by Donald W. McGlashan and Perry F. Roys. Butte, Montana School of Mines, 1952. v, 47 p. illus., map. 28 cm. Montana. Bureau of Mines and Geology. Miscellaneous contributions, no. 12 Tungsten. Roys, Perry F. Miscellaneous contribution (Montana Bureau of Mines and Geology) ; no. 12. 28641 28641