Understanding the Earth :  

 - 2nd Ed.; 
 - Sussex:  The Open University Press,  1972. 
 - 383p.;  ill.  25cm 
<br/><br/><label>ISBN: </label>851413080 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences
<br/><br/><label>Dewey Class. No.: </label>550  / UND