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100   $a20041214d1959----km y1itay5003----ba
101 0 $aeng
102   $aUS
200 1 $aEconomic concentration and the monopoly problem$fEdward Mason
210   $aCambridge$cHarvard University Press$d1959
215   $aXVI, 412 p.$d24 cm
606 0 $aImprese$2BNCF
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700  1$aMASON,$bEdward$014929
801  0$aIT$bsalbc$gISBD
912   $a990002269580203316
951   $a339 MAS 1 (IEP VIII 418)$b14686 E.C.$cIEP VIII$d00199020
951   $a300 338.8 MAS$b4887 DISES
959   $aBK
969   $aECO
969   $aDISES
996   $aEconomic concentration and the monopoly problem$91066944
997   $aUNISA