Ashok Kumar; Prem Mohan Nigam <br/><br/>
Economic and applied entomology 

 -  Emkay Publications, New Delhi  1997 
 - 350 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insects (Entomology); Invertebrate Zoology
<br/><br/><label>Dewey Class. No.: </label>595.7  ASH-E