Interactive COBOL Programmer's Reference.
Data General Corp., westboro MA 1977; 152 pages.
Data General Corp., westboro MA 1977; 152 pages.
US Dept Commerce, National Bureau of Standards, Wash., D.C., 1966; 256 pages, References, diagrams.
IBM, second edition February 1978; (1) 100 pages, some illustrations; (2) second edition May 1977, 96 pages.
Holt, Rinehart & Winston, NY 1970; 576 pages, index, some illustrations.