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100   $a20000920d1970----km-y0itay50------ba
101 0 $aeng
200 1 $aFrege and Godel$eTwo Fundamental Texts in Mathematical Logic$fedited by Jean van Heijenoort
210   $aCambridge [Mass.]$cHarvard University Press$d1970
215   $a116 p.$d26 cm
610 0 $aLogica
610 0 $aRicorsività
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700  1$aHeijenoort,$bJean : van$047663
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