00293nam a2200109Ia 4500082002000000100002000020245006800040260005200108300001300160500000500173700000500178  a338.91bH816.HN  aHorowitz, David  aHemispheres north and south; economic disparity among nationsb  aBaltimorebJohns Hopkins University Pressc1966  ax, 118p.  a  a