00477nam a22001577a 4500003000400000008004100004082001700045100000900062245009800071260003500169300001000204650003400214650004100248650002100289650000900310OSt230906b        |||||||| |||| 00| 0 eng d  a633.18bS99P  aIRRI  aSymposium on Cropping Systems Research and  Development for the Asian Rice Farmer / cby IRRI  a.- Philippinesb: IRRIc, 1977  a454p.  aTechnology (Applied Sciences)  aAgriculture and Related Technologies  aCropping Systems  aRice