Witte, Bertold U. Computer procedures for the determination of a simple layer model of the geopotential from dopper observations / Bertold U. Witte - Washington : U.S. Dept. of Commerce, 1971 - iii, 63 p. ; ill. ; 28 cm. - NOAA technical report NOS ; no. 42 . Subjects--Topical Terms: Geodesy--Gravity measurement Dewey Class. No.: 528.27