00943cam a22002651 4500 gs 45000079 DLC 20260227111351.0 760206s1945 oncab b f000 0 eng gs 45000079 (OCoLC)1972021 DLC NcBoA DLC premarc QE185 .A43 no. 2 Ambrose, John Willis, 1904- ... The magnetometer as an aid in geological mapping, by J. W. Ambrose. Ottawa, E. Cloutier, printer to the King, 1945. 2 p. l., 21 p. illus. (incl. map, profiles, diagrs.) 25 cm. Geological Survey of Canada. Geological Survey bulletin no. 2 At head of title: Canada. Dept. of mines and resources. Mines and geology branch. Bibliographical foot-notes. Magnetometers. Geology Maps. Geology Québec (Province) Maps. 28042 28042