International Rice Research Institute <br/><br/>
Training and technology Transfer Course Performance Objectives Manual 

 - P.O.BOx 933,1099 Manila,Philippines  International Rice Research Institute  1990 
 -  p.286:pic. 
<br/><br/><label>ISBN: </label>9712200140 
<br/><br/><label>Universal Decimal Class. No.: </label>633.18  / DOA