MANICKAVASAGAR, Ponniah <br/><br/>
A National study on the marketing distribution and use of agro pesticides in Sri Lanka / 
[by] Ponniah Manickavasagar 
 - Peradeniya  Department of Agriculture  1979 
 - varied pages 
<br/><br/><label>ISBN: </label>112154 
<br/><br/><label>Dewey Class. No.: </label>632.95  / MAN