Collingwood, G. H.  <br/><br/>
Knowing your trees / 
G. H. Collingwood and Warren David Brush. 
 - Washington, D. C. :   American Forestry Association,   c 1947. 
 - 312 p. :  ill. ;  29 cm. 
<br/><br/>333  333 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trees--United States.
<br/><br/><label>Dewey Class. No.: </label>582.16 / C691k