Ridley, B. K. <br/><br/>
The physical environment / 
by B. K. Ridley. 
 - Ellis Horwood ; New York :  Halsted Press,  c1979. 
 - 236 p. :  ill. ;  23 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0470267453 (Halsted) 0853121427 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences.<br/>Astronomy.
<br/><br/><label>Dewey Class. No.: </label>550  / RIP 1979