00300nam a2200109Ia 4500082002100000100006000021245005200081260003500133300001200168500000500180700000500185  a338.901bUn58.IE  aUnited Nations. Economic and Social Affairs, Deptt. of-  aIntegration of economic and physical planningb  aNew YorkbUnited Nationsc1975  av, 75p.  a  a