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200 1 $aOn the Social Desiderability of Patents for Sequential Innovations in a Vertically Differentiated Market$fby Luca Lambertini, Piero Tedeschi
210   $d2000
225 1 $aDiscussion Papers$fDipartimento di scienze economiche "Marco Fanno", Padova$v2000.12
225 1 $aCollana del Dipartimento di scienze economiche, Università di Bologna$v376
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