Studies of Geophysical Methods, 1928 and 1929: Memoir 165.
Ottawa: Canada Department of Mines, 1931. 8vo. 225 pp. Spine ends are lightly worn and spine has minor creasing. Corners are slightly curled and worn. Very light soiling and rubbing to rear cover. Spine hinges reinforced w/ tape on inside. Book contains four papers on various geological topics including: electrical prospecting methods, geophysical investigations of Mammoth Caves, Kentucky and Sudbury Basin District, Ontario, investigations in applied geophysics and experiments in electrical exploration. Very Good Paperback (Item ID: 45734)