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035   $a(Aleph)000321603FED01
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100   $a20000920d1982----km-y0itay50------ba
101 0 $aita
102   $aIT
200 1 $a<<The >>Telecommunications Industry$eThe Dynamics of Market Structure$fGerald W.Brock.
205   $a2nd ed.
210   $aCambridge$dMass.$cHarvard University Press$d1982.
215   $aXI, 336 p.$d24 cm
225 1 $aHarvard economic studies$v151
676   $aH/3.80
702  1$aBrock,$bGerald W.
801  0$aIT$bUNINA$gRICA$2UNIMARC
901   $aBK
912   $a990003216030403321
952   $aH/380 BRO$b3223$fSES
959   $aSES
996   $aTelecommunications Industry$9455448
997   $aUNINA
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