Ordway, R. J.  <br/><br/>
Earth science and the environment  

 - D. Van nostrand company  New york  1974 
 - 486p. 
<br/><br/><label>Nat. Bib. No.: </label>4912 
<br/><br/><label>Universal Decimal Class. No.: </label>550.7  / ORD