Varian, Hal R. The Economics of Information Technology : An Introduction - Cambridge : Cambridge University Press 2004 - 102 S. I - The Raffaele Mattioli Lecture Series The Raffaele Mattioli Lecture Series . ISBN: 0521605210 Subjects--Topical Terms: Branchenstudien(15x5)Dienstleistungen, Tertiärer Sektor(15x56)Quartärsektor, Informationssektor(15x59) Dewey Class. No.: 33.766