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This book presents case studies of the development of videotex in the UK, France, Germany, Italy, the Netherlands, Austria, Switzerland, Belgium, Denmark, Spain, Sweden, Ireland and the United States. These studies offer an excellent overview of the many factors which might influence the outcome of complex innovation and implementation processes. Videotex is an interlocked innovation comprising not only innovations in the infrastructure (networks, hard- and software) but also an innovation in the supply of services and the user demand. If only one of these elements is absent the entire chain...