00724cam a22002291 4500 gs 48000003 DLC 20260227111353.0 790801s1947 mtua 000 0 eng c gs 48000003 (OCoLC)5230054 U.S. Geol. Survey TxEU DLC premarc TN942 .D6 Dougan, Charles William, 1908- Dickite-clay deposit of Fergus County, Montana. Butte, Montana School of Mines, 1947. v, 11 p. plates, map. 28 cm. Montana Bureau of Mines and Geology. Miscellaneous contribution; no. 9 Bibliography: p. 10-11. Clay Montana Fergus County. 28231 28231