| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Exploring Earth Science | 978-0-205-06733-6 | 1981 | |
| Exploring earth science: teacher's guide with tests | 978-0-205-06734-3 | 1981 | |
| Exploring life science | 978-0-205-06728-2 | 1980 | |
| Exploring Physical Science | 978-0-205-06738-1 | 1981 | Peter J. Howell |