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100   $a20021010d1971----km-y0itay50------ba
101 0 $aeng
200 1 $aEconomic theory$fGary S. Becker$gwith the assistance of Michael Grossman and Robert T. Michael
210   $aNew York$cKnopf$dc1971
215   $aXII, 222 p.$d24 cm
700  1$aBecker,$bGary Stanley$f<1930- >$0118957
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