The minicomputer in on-line systems : small computers in terminal-based systems and distributed processing networks / Martin Healey and David Hebditch. Healey, Martin. Hebditch, David Leroy. Minicomputers. Online data processing. Electronic data processing Distributed processing. QA76.5 .H444 1981 001.64 19 HEM Includes index. Cambridge, Mass. : Winthrop, c1981. c1981. 1981 Text xviii, 334 p. : eng Winthrop computer systems series