The different technologies applicable to computer networks serving limited geographic areas, e.g., a single campus, factory, or office complex, are discussed in a number of short presentations made by active researchers and implementers in this field. Intensive discussion by participants in working sessions is reported for six topics: subnet architecture, protocols for local area networks, local network applications, network architecture, network operating systems, and analysis and performance evaluation. A list of attendees and a bibliography on local area computer networks is included. (Author/RAO)