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100   $a20030910d--------km-y0itay50------ba
101 0 $aita
102   $aIT
200 1 $aConcentration and price-cost margins in manufacturing industries$fNorman R. Collins and Lee E. Preston.
210   $aBerkeley$aLos Angeles$cUniversity of California Press$d1968.
215   $axvi, 163 p.$cill.$d22 cm
225 1 $aPublications of the Institute of Business and Economic Research, University of California
610 0 $aImprese$aConcentrazione
676   $aH/2.111
700  1$aCollins,$bNorman R.$079004
701  1$aPreston,$bLee E.$f<1930- >$0105824
801  0$aIT$bUNINA$gRICA$2UNIMARC
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996   $aConcentration and price-cost margins in manufacturing industries$9514966
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