00283nam a2200109Ia 4500082002100000100003000021245004500051260005200096300001500148500000500163700000500168  a338.901bP451.RR  aPerloff, H. S. and Others  aRegions, resources and economic growthb  aBaltimorebJohns Hopkins University Pressc1960  axxv, 716p.  a  a