TY - BOOK ED - Geological Survey of Canada TI - Studies of geophysical methods, 1928 and 1929 U1 - 551.1/C72 PY - 1931/// CY - Ottawa: PB - F.A. Acland, printer, KW - PROSPECCIÓN GEOFÍSICA KW - GEOFÍSICA KW - CIENCIAS DE LA TIERRA N1 - Part I. Investigations made in Co-operation with Radiore Company of Canada, Limited Schlumberger Electrical Prospecting Methods, and swedish american prospecting company of Canada -- Part II. Geophysical investigations at the mammoth caves, Kentucky, and in Sudbury Basin District, Ontario -- Part III. Experiments in Electrical Exploration Made in the Summer of 1929 -- Part IV. Geophysical Survey of the Hull-Gloucester and Hazeldean Faults ER -