Purdom, P. Walton <br/><br/>
Environmental science  managing the environment 

 - Ohio  Bell & Howell  1980 
 - xi,523 p.   
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIAL SCIENCE
<br/><br/><label>Dewey Class. No.: </label>363.7  / PUR