_Environmental science A global concern [6th ed]  

 - USA Mc graw Hill 2001  
 - xix,646p;ill  
<br/><br/> Includes index  
<br/><br/><label>ISBN: </label>72909323 
<br/><br/><label>Subjects--Topical Terms: </label><br/>_environment 
<br/><br/><label>LC Class. No.: </label>GE 105 .C86 2001