Snodgrass, R E <br/><br/>
Principles of insect morphology 

 -  McGraw-Hill Book Co., New York  1935 
 - 667 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insects (Entomology); Invertebrate Zoology
<br/><br/><label>Dewey Class. No.: </label>595.7  SNO-P