ICL 1900 series: Operating systems GEORGE 3 and 4.
Edition: 5th ed September 1972 reprinted November 1973 (incorporating Amendment list 1) reprinted April 1976 (incorporating Amendment list 2) reprinted April 1976.
Series: Technical publication -- 4345
Publisher: International Computers Limited
Published: 1977
Place of publication: London
Language: eng
Notes: In loose-leaf binder. Updated by amendment sheets.