00377    a2200121   4500001001000000005001700010008004100027245004900068100001800117700002900135700002300164773006800187ART_1468520260410161913.0260409a                                 10aTwelve thousand individual welfare functions1 aKapteyn, Arie1 avan Herwaarden, Floor G.1 aVan Praag, Bernard0 tEuropean economic reviewg- Vol. 9, Nº 3 (ago. 1977)wREV13346