00274nam a2200121Ia 4500008004100000100001900041245002300060260002400083300000900107650001400116942000700130999001500137190216s9999||||xx |||||||||||||| ||und||  aRobert Dorfman 0aPrices And Markets  bPrentice Hallc1984  a264p  aEconomics  cBK  c9707d9707