Singh Gurshan <br/><br/>
Applied entomology  vol-II 

 - 4th 
 - Ludhiana    Kalyani pub  2021 
 - 359p. 
<br/><br/><label>ISBN: </label>9786335488898 
<br/><br/><label>Dewey Class. No.: </label>595.7 SIN