Mason, William H and Folkerts, George W  <br/><br/>
Environmental Problems: Principles Readings And Comments 

 - America:  Wm.C.Brown Co. Publishers,   1973 
 - 397 p.  PB 
<br/><br/> General 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Problems: Principles Readings And Comments 
<br/><br/><label>Universal Decimal Class. No.: </label>301.3  / MAS-E