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100   $a20000920d1973----km-y0itay50------ba
101 0 $aENG
102   $aIT
200 1 $aEssential mathematics for economists$fJ. Black, J. F. Bradley.
210   $aLondon$aNew York$cJohn Wiley & Sons$d[c1973].
215   $ax, 268 p.$cillus.$d24 cm
702  1$aBlack,$bJohn
702  1$aBradley,$bJames F.
801  0$aIT$bUNINA$gRICA$2UNIMARC
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