00322n   a2200133 a 4500000002100000001000700021005001700028082001900045100001600064245005900080250000800139260002900147300001200176B B                 00229020220201163250.0  a338.5bM86 ECO  aAhuja, H.L.  aAnalaysis of economic systems and microeconomic theory  a3rd  aNew DelhibS.Chnadc1986  axii,459