Ojakangas, Richard W. <br/><br/>
Theory and problems of introductory geology 

 - New York :  McGraw hill,  1991. 
 - vii,294p.;  27cm 
<br/><br/><label>ISBN: </label>0-07-100902-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth Sciences<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>550.2  / OJA