Helms, John. A. <br/><br/>
Principles of silviculture 

 - 2nd Ed. 
 - New york  McGraw- Hill Book Company  1979 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BOTANY
<br/><br/><label>Dewey Class. No.: </label>634.95/DAN