All about pruning 

 - San Romon  Chevron  1978 
 - 95p.  28cm 
<br/><br/><label>ISBN: </label>0917102738 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forest thinning
<br/><br/><label>Dewey Class. No.: </label>631.542  / ALL