R. A. · R.R. · Robert A. · Robert R.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Effective Communication in Business | 978-0-538-05731-8 | 1988 | Morris Philip Wolf · S Kuiper |
| Effective Communication in Business | 978-0-538-05510-9 | 1974 | Morris Philip Wolf |
| Effective Communication in Business: Instructors' Manual to 9r.e | 978-0-538-28393-9 | 1988 | Shirley Kuiper · Morris Philip Wolf |
| Effective Communication in Business: Student Gde.to 9r.e | 978-0-538-05732-5 | 1988 | Shirley Kuiper · Morris Philip Wolf |