| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Essential Skills for Algebra | 978-0-13-284217-4 | 1987 | Viggo P. Hansen · Robert J. Wisner |
| Essential Skills for Arithmetic | 978-0-13-284258-7 | 1987 | Viggo P. Hansen · Robert J. Wisner |
| Essential Skills for Intermediate Algebra | 978-0-13-284530-4 | 1987 | Viggo P. Hansen · Robert J. Wisner |
| How to Pass the California Entry Level Mathematics Test | 978-0-13-406588-5 | 1987 | Viggo P. Hansen · Robert J. Wisner |
D B · D. Bell · E.B. · E. Bell · E. D. · Evelyn B. · Evelyn Bell