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100   $a20010829d1991----km y0enac5003----ba
101 0 $aeng
102   $aGB
200 1 $aSunk costs and market structure$eprice competition, advertising, and the evolution of concentration$fJohn Sutton
210   $aCambridge$cThe Mit Press$dc1991
215   $aXIV, 577 p.$cill.$d24 cm
606   $aProduzione$2BNCF
676   $a338.6
700  1$aSUTTON,$bJohn$0122624
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