Heiskanen, W.A. and Meinesz, Vening F.A. <br/><br/>
Earth and Its Gravity Field 
Heiskanen, W.A. and Meinesz, Vening F.A. 
 - New York   McGraw-Hill   1958 
<br/><br/><label>Dewey Class. No.: </label>551.12  / HEI.E