Computers at work /
Clark, John O. E.,1937-
London Hamlyn
1979
Previous ed.: Feltham : Hamlyn, 1969
Bibliography: p.156. - Includes index
ISBN 0-600-32204-1
ISBN 0-600-00112-1 Pbk : £1.25
Previous control number ISBN 0-600-32204-1
Computers.