| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Exploratory Business: Teacher's Manual & Key | 978-0-07-025051-2 (0-07-025051-0) | 1978 | |
| Student's transcript of Gregg shorthand for colleges: Speed building | 978-0-07-025056-7 (0-07-025056-1) | 1982 | |
| Sustained Timed Writings | 978-0-07-025062-8 (0-07-025062-6) | 1970 | James Llewelyn White |
L.G. · R. Grubbs · R. L · Robert G. · Robert L. · Robert Lowell Grubbs