00335nam a2200121Ia 4500082002300000100005400023245004300077260002600120300001000146490004700156500000500203700000500208  a338.16072bIn39.RR  aIndian Agriculture Research Institute, New Delhi.  aRecent research on multiple croppingb  aNew DelhibIARIc1972  a148p.  aIARI Research bulletin, new series v no.8  a  a