00895cam a22002651 4500 gs 58000041 DLC 20260227111406.0 870214s1957 abcb b 000 0 eng c gs 58000041 (OCoLC)15199555 U.S. Geol. survey. Libr. TxDaM DLC premarc QE186 .R4 no. 57-1 Gravenor, Conrad Percival, 1927- Glacial geology, Sedgewick district, Alberta, by C.P. Gravenor and R.B. Ellwood. Edmonton, 1957. 43 l. maps (2 fold. col. in pocket) 28 cm. Research Council of Alberta. Preliminary report 57-1 Bibliography: leaves: 30-31. Glacial epoch. Geology, Stratigraphic Pleistocene. Geology Alberta Sedgewick district. Ellwood, R. B., joint author. 29212 29212