00274nam a2200121Ia 4500082002000000100001800020245005500038260002600093300001600119500000500135700000500140856000700145  a330.1bS1631.EF  aSlater, R. A.  aEconomicsbfact and theory; an introductory course  aLondonbMethuenc1968  aviii, 332p.  a  a  df