Collingwood, G. H.  1890-1958 <br/><br/>
Knowing your trees / 
by G. H. Collingwood and Warren D. Brush 
 - New and rev. ed. 
 - Boston :  American Forestry Association,  1955 
 - 328 p. ;  25 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label> USD 6.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trees--United States
<br/><br/><label>Dewey Class. No.: </label>582.160973