00817cam a22002771 4500 gs 49000159 DLC 20260227111355.0 790615s1949 mtu b s000 0 eng gs 49000159 (OCoLC)5069311 DLC TxCM DLC premarc TN946 .P4 Perry, Eugene S. (Eugene Sheridan), 1892- Gypsum, lime, and limestone in Montana. Butte, Montana School of Mines, 1949. 45 p. Montana. Bureau of Mines and Geology. Memoir no. 29 Bibliography: p. 21-22, 45. Gypsum. Lime. Limestone Montana. Building materials. Montana Bureau of Mines and Geology. Memoir ; no. 29. 28386 28386