Perry, George Sargent. <br/><br/>
The common trees and shrubs of Pennsylvania, native and introduced. 
By Geo. S. Perry ... 
 - Harrisburg,  Commonwealth of Pennsylvania Dept. of forests and waters,  1932. 
 - 127 p.  illus.  19 cm. 
 - Pennsylvania. Dept. of forests and waters. Bulletin  no. 33 rev. .
<br/><br/><label>LCCN: </label>agr33000086  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shrubs--Pennsylvania.<br/>Trees--Pennsylvania.
<br/><br/><label>LC Class. No.: </label>SD12  / .P33 no. 33 rev.