| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| COBOL From Micro to Mainframe Instructor's Resource Manual The IBM Environment Vol. 2 | 978-O-13-O16122-2 (O-13-O16122-5) | 1991 | Robert T. Grauer |
Robert G. · Robert Galavan · Robert Galvin · Robert Gelbmann · Robert Gilpin