Madden Gary Ed. Economics of digital markets. - Cheltenham Edward Elgar 2009 - xxi,354p cm. ISBN: 6882.9740000000002 Standard No.: 107365 Source: 89, 30/12/2009, Better Book Service Textual Subjects--Topical Terms: Buisness Economics Dewey Class. No.: X:8:(D6,8(B),2775), P9