Ravimannan, Nirmala <br/><br/>
Principal weeds of srilanka 
Nirmala Ravimannan, 
 - Inuvil  Department of  botany  2004 
 - 30 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture-Sri Lanka
<br/><br/><label>Dewey Class. No.: </label>632.5095493  / RAV