00298n   a2200121 a 4500000002100000001000700021005001700028082001800045100001600063245004600079260003400125300001700159B B                 00144620220201162552.0  a338.5bM6 ECO  aDhingra, IC  aEconomic Systems and Microeconomic Theory  aNew DelhibSultan Chandc1986  aix,490illus.