00443nam a22001337a 4500 140301b xxu||||| |||| 00| 0 eng d Fil. 630.7 Sy6 c1977 3954 IRRI Symposium on cropping systems research and development for the asian rice farmer/ Laguna : The International Rice Research Institute, c1977. 454 p. : Crop rotation Cropping system ddc FIL 1758 1758 0 0 ddc 0 0 FIL SPMT-CAS SPMT-CAS 2014-03-01 0 Fil/630.7/Sy6/c1977 004573 2016-04-07 00:00:00 2014-03-01 BK