00322nam a2200121Ia 4500082002200000100002500022245004000047260004900087300001500136490003900151500000500190700000500195  a338.901bSa121.PE  aSachs, Ignacy d ed.  aPlanning and economic developmentb  aWarszawabPolish Scientific Publishersc1964  axii, 259p.  aStudies on developing countries, 1  a  a