Comstock, John Henry. <br/><br/>
An introduction to entomology / 
by John Henry Comstock. 
 - 9th ed. rev. 
 - Ithaca, NY :  Cornell University Press,  1920. 
 - xix, 1064 p. : ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Entomology.