Heiskanen, Weikko Aleksanteri, 1895- Physical geodesy / Weikko A. Heiskanen and Helmut Moritz. - San Francisco : W.H. Freeman, 1967. - vi, 364 p. : ill. ; 25 cm. - A series of books in geology . Includes bibliographical references Subjects--Topical Terms: Gravity.--------Geodesy.-------- Dewey Class. No.: 526.7