Izumi, K. Ranatunga, A.S. <br/><br/>
Environmental and Social Constraints on Paddy Production Under Existing Conditions 

 - Agrarian Research & Training Institute   Colombo  1974 
 - 32p. 
 -  4 .
<br/><br/><label>Nat. Bib. No.: </label>4009 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.15  / IZU