00311nam a2200133Ia 4500008004100000100001300041245004500054250001100099260002300110300000800133650001400141942000700155999001500162190216s9999||||xx |||||||||||||| ||und||  aSeth M L 0aTheory And Practice Of Economic Planning  aIst ed  bS Chand & Coc1977  a732  aEconomics  cBK  c9435d9435