00495     2200193   4500001002100000035002000021082001100041084001100052110000900063245007200072260003500144300002600179650001600205650002200221650003100243990000900274990000900283990000900292INLIS000000000001629  a0010-1220000470  a631.58  a631.58  aIRRI  aProceedings of the 1979 workshop on the economic of cropping system  aLaguna, PhilippinabIRRIc1980  a198 p.c: ill ; 27 cm  aPROCEEDINGS  aSISTEM PERTANAMAN  aSISTEM PERTANAMAN-EKONOMI.  a2593  a2593  a2593