A manual on the weeds of the major crops of Ceylon 

 - Ceylon  Department of Agriculture  1951 
 - 112p.  30cm 
 - Peradeniya manual no. 7 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture and related technologies<br/>Weeds<br/>Plant injuries,diseases,pests
<br/><br/><label>Dewey Class. No.: </label>632.5  / MAN