Levison, Jacob Joshua,  1881- <br/><br/>
Studies of Trees  [electronic resource] / 
Jacob Joshua Levison 
 -  Project Gutenberg,  2005 
 - Project Gutenberg  16116 .
<br/><br/> Public domain in the USA. 
<br/><br/>Electronic text 
<br/><br/><label>Subjects--Index Terms: </label>Trees 
<br/><br/><label>LC Class. No.: </label>QK