Brown, George D. <br/><br/>
Excursions in geology :  a modular program for physical geology / 
George D Brown and George T Ladd. 
 - Boston   Houghton Mifflin Co.,  1973. 
 - 200 p. :  ill. ;  24 cm. 
<br/><br/> Student manual. 
<br/><br/>Includes bibliographical references. 
<br/><br/>
<br/><br/><label>ISBN: </label>0395168309 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>551