Plummer, Charles C., 1937-; McGeary, David, <br/><br/>
Physical geology 

 - 6th 
 - Iowa  Wm.C. Brown Publishers  1993 
 - 537  p. 
<br/><br/><label>ISBN: </label>0-697-13807-0 
<br/><br/><label>Dewey Class. No.: </label>CIR  551 P48 1993 c.1