00996nam--2200349---450-99000217259020331620090306105438.0000217259USA01000217259(ALEPH)000217259USA0100021725920041115d1961----km-y0itay0103----baengGB||||||||001yyTheoretical welfare economicsby J. de V. GraaffLondon [etc.]University Press1961XII, 178 p.21 cm20012001001-------2001330.1556GRAAFF,Johannes de Villiers247757ITsalbcISBD990002172590203316330.155 GRA 1 (IEP VIII 543)17459 E.C.IEP VIII00201063BKECOSIAV71020041115USA011406RSIAV49020090306USA011054Theoretical welfare economics707085UNISA