Tillekeratne, L.M.K. <br/><br/>
Hand book of rubber : Agronomy 

 - Agalawaththa  Rubber research institute   2001 
 - 219p., 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cultivation
<br/><br/><label>Universal Decimal Class. No.: </label>633.91  / TIL