Symposium on cropping systems research and development for the Asian rice farmer / 

 - Manila :  The International Rice Research Institute,  1977. 
 - 454 pages ;  23 cm.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cropping systems<br/>Cropping patterns
<br/><br/><label>LC Class. No.: </label>S 602.5 I57 1977 F