Comstock, John Henry,  1849-1931. <br/><br/>
An introduction to entomology / 
by John Henry Comstock. 
 - 9th ed. rev. 
 - Ithaca, N.Y. :  Cornell University Press,  1940. 
 - 1064 p. :  ill. ;  24 cm. 
<br/><br/> Includes 8 extra unnumbered pages.  'Preface to the 1940 edition' signed: Glenn W. Herrick. 
<br/><br/>Bibliography : p. 1008-1027. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insects.