G. C. · G. Condon · Gregg A. Condon
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Gregg Shorthand: Dictation and Transcription | 978-0-07-073671-9 | 1989 | Charles E. Zoubek |
| Gregg Shorthand Dictionary | 978-0-07-073682-5 | 1989 | Charles E. Zoubek · John Robert Gregg |
| Gregg Shorthand for the Administrative Assistant Workbook 3 | 978-0-07-073679-5 | 1989 | Charles E. Zoubek |
| Gregg Shorthand One Series Ninety: A Gregg Text-Kit in Continuing Education | 978-0-07-037769-1 | 1984 | Louis A Leslie · Charles E Zoubek |
| Supreme Electronics, Inc. | 978-0-13-115692-0 | 1989 | William Patton · Ron Schlattman · Lewis Elia · Kevi Zalondek |