Unger, Samuel G. <br/><br/>
Environmental implications of trends in agriculture and silviculture / 
by Samuel G. Unger 
 - Washington, D. C. :  United States Government Printing Office,  1978- 
 - v. ;  28 cm. 
<br/><br/> Library has vol. 2  EPA-600/3-78-102 
<br/><br/>Vol. 2. Environmetal effects of trends 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forests and forestry--United States<br/>Forest management--United States
<br/><br/><label>Dewey Class. No.: </label>634.950973