00556nam a2200157Ii 4500 AGL 633 1977 IRR C142 Or.1 International Rice Research Institute Symposium on Cropping Systems Research and Development for the Asian Rice Farmer : [proceedings] Los Ba©łos, Philippines : International Rice Research Institute, 1977 454 p. : ill., graphs ; 23 cm Running title: 1976 Cropping Systems Symposium Rice Cropping systems EK 18311 18311 0 0 0 633_197700000000000_IRR_C142_OR_1 0 82013 LBA LBA A142 2019-10-22 A37824 633 1977 IRR C142 Or.1 2019-10-22 EK