| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Exploratory Business: Office, Marketing, Accounting | 978-0-07-025050-5 (0-07-025050-2) | 1978 | |
| Gregg Shorthand for Colleges, Speed Building | 978-0-07-025080-2 (0-07-025080-4) | 1976 | |
| Gregg Shorthand for Colleges, Speed Building, Series 90 | 978-0-07-025055-0 (0-07-025055-3) | 1980 | B. S. Ober |
L.G. · R. Grubbs · R. L · Robert G. · Robert L. · Robert L. Grubbs · Robert Lowell