| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Challenge Blackline Masters - Enrichment for Level 6 | 978-0-02-102650-0 (0-02-102650-5) | 1982 | Tina Thoburn |
Jack D. Forbes · Jack E. Forbes · jack e. forbes and robert d bechtel tina thoburn · Jake Forbes