00291nam a2200121Ia 4500008004100000100001300041245004500054250001100099260002300110650001400133942000700147999001500154190216s9999||||xx |||||||||||||| ||und||  aSeth M L 0aTheory And Practice Of Economic Planning  aIst ed  bS Chand & Coc1977  aEconomics  cBK  c9318d9318