00792cam a22002531 4500 gs 49000301 DLC 20260227111355.0 761108s1949 abcbf b f001 0 eng c gs 49000301 (OCoLC)2545055 U.S. Geol. Survey. Libr. MiEM MiEM OCoLC DLC premarc QE186 .C7 557.123 Crockford, Michael Bertrand Bray, 1902- Geology of Ribbon Creek area, Alberta. Edmonton, A. Shnitka, King's Printer, 1949. 67 p. plates, fold. map (in pocket) 25 cm. Research Council of Alberta. Report no. 52 Bibliography: p. 61-64. Geology Alberta. Ribbon Creek area, Alberta. 28415 28415