Computer operating systems : for micros, minis, and mainframes / David Barron. Barron, D. W. (David William), 1935- Operating systems (Computers) QA76.6 .B37 1984 001.6425 19 BAC Includes index. Bibliography: p. [134]-135. London ; New York : Chapman and Hall, 1984. 1984. 1984 Text viii, 140 p. : eng