Programming Language One with structured programming
Bates, Frank,1938-
Douglas, Mary L.
Englewood Cliffs London Prentice-Hall
1975
With answers
Previous ed.: Englewood Cliffs ; Hemel Hempstead : Prentice-Hall, 1970
Includes index
ISBN 0-13-730473-0 Pbk : £6.45
PL/I (Computer program language)
Electronic digital computers