Gilbert, Charles M.  1910-. <br/><br/>
Physical geology:  laboratory course/ 
Charles M. Gilbert, Mark N. Christensen. 
 - Second edition 
 - New York:  McGraw-Hill Book,  1967. 
 - 191 pages:  ill. ;  29 cm. 
<br/><br/><label>ISBN: </label>0070232067 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Laboratory manuals.