Spencer, Edgar W. <br/><br/>
Introduction to the structure of the earth 
Edgar W. Spencer 
 - 2nd  ed. 
 - Tokyo  McGraw-Hill Kogakusha  c1977 
 - x,640p.;ill.;  24cm. 
<br/><br/><label>Dewey Class. No.: </label>551.1  / SPE