00359nam a2200121Ia 4500082002900000100002000029245010800049260005400157300001000211500000500221653000600226700000500232  a338.1018409545bSi617.RP  aSingh, Inderjit  aA recussive programming model of traditional agriculture in transitionba case study of Punjab, Indiac  aLondonbUniversity Microfilms Internationalc1971  a574p.  a  a   a