00350nam a2200157Ia 4500008004100000020000900041035000900050082001500059100002100074245003400095250000800129260003500137300000800172500000600180650000600186210723s9999||||xx |||||||||||||| ||und||  aNULL  a8470  a338.9BDUR  aDurbin, E. F. M. 0aProblems Of Economic Planning  a3rd  aLondonbRoutledge & Kegan Paul  a214  a0  a-