00858cam a22002651 4500 gs 30000213 DLC 20260227111334.0 761202s1930 xxcabf 000 0 eng gs 30000213 (OCoLC)2589929 DLC OT DLC premarc TN946 .C33 1930 Canada. Mines Branch. The gypsum industry of Canada, by L. Heber Cole. Ottawa, F. A. Acland, printer, 1930. vii, 164 p. tables, diagrs. XX pl., 2 fold. maps, fold. tables. 25 cm. At head of title: Canada. Dept. of Mines. Mines Branch. In lower right corner no. 714. Bibliographical foot-notes. Gypsum. Mines and mineral resources Canada. Cole, Lionel Heber, 1883- 26807 26807