NEELAKANTAN,N VELAPPAN PILLAI <br/><br/>
Sasya Samrakshana Upakaranangal 

 - 1st Ed.  Reprint 
 -  State Institute Of Language Thiruvananthapuram,  1981 
 - 135p 
<br/><br/> Original Title : Plant Protection Equipment 
<br/><br/><label>Dewey Class. No.: </label>581  / NEE/S.M