00373    a2200121   4500001001000000005001700010008004100027245005500068100002300123700002100146773006700167999001700234ART_1258520260410161907.0260409a                                 10aFreeedom of entry and the existence of pure profit1 aLipsey, Richard G.1 aEaton, B. Curtis0 tThe Economic Journalg- Vol. 88, Nº 351 (set. 1978)wREV12512  c26480d26480