1952, කෘෂිකර්‍ම ලේඛනය 

 - Department of Census and Statistics, Sri Lanka  1957 
 - 163p.  table 
<br/><br/><label>Nat. Bib. No.: </label>2473 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.16  / AGR