| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Business Machine Exercises | 978-0-07-093442-9 (0-07-093442-8) | 1977 | J.H. Dool |
| Business Machine Problems | 978-0-07-093462-7 (0-07-093462-2) | 1978 | " |
D. J. · D.O. · D. Owen · D. R. J. Owen · David J. Owen · David John Owen · David R. J. Owen · Deidre J Owen · Dr J Owen · Dr. Jack Owen · Dr John Owen · J. Owen