Hybrid rice breeding manual / 
S.S. Virmani... [et al.]. 
 - Los Banos, Laguna :  IRRI,  c1997. 
 - 151 page :  illustration ;  23 cm. 
<br/><br/> References: p. 149-151. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rice breeding.