Varty W <br/><br/>
Adelges insects of silver firs 

 -  1956 
 - p.  cm. 
 - Forestry commission bulletin; 26 .
<br/><br/><label>Standard No.: </label>57281 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>JA:4K86, J6   CS