Heiskanen, Weikko A. 1895-1971. The earth and its gravity field / W.A. Heiskanen , F.A. Vening Meinesz. - New York, McGraw-Hill, 1958. - x, 470 p. ill., 24 cm. - McGraw-Hill series in the geological sciences . Includes bibliographies. Subjects--Topical Terms: Geomagnetism. Subjects--Geographic Terms: Earth (Planet) Dewey Class. No.: 551.1 / HEE 1958