Earth, The figure of the Earth

Recent standard works include G. Bomford, Geodesy, 4th ed. (1980, reprinted 1983); Weikko A. Heiskanen and Helmut Moritz, Physical Geodesy (1967); Wolfgang Torge, Geodesy, an Introduction (1980; originally published in German, 1975), a classical treatment; and Petr Van�cek and Edward J. Krakiwsky, Geodesy, the Concepts, rev. ed. (1986). See also International Association Of Geodesy, Systeme geodesique de reference 1967: Geodetic Reference System 1967 (1971).