01010nam--2200349---450-99000228889020331620090310115318.0000228889USA01000228889(ALEPH)000228889USA0100022888920041221d1972----km-y0itay0103----baengUS||||||||001yyOptimum social welfare and productivitya comparative viewJan Tinbergen...[ et al.]New YorkUniversity Press1972176 p.24 cm20012001001-------2001330.155TINBERGEN,JanITsalbcISBD990002288890203316330.155 OPT 1 (IEP VIII 463)28392 E.C.IEP VIII00202274BKECOSIAV31020041221USA011044RSIAV49020090310USA011153Optimum social welfare and productivity515886UNISA