| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Investigating Societies and Environments Book 1 | 978-0-521-64478-5 | Ray Land · Kathleen Gordon | |
| Investigating Societies and Environments Book 2 | 978-0-521-64477-8 | 2004 | Ray Land · Kathleen Gordon |
| Investigating Societies and Environments Book 3 | 978-0-521-65866-9 | Kathleen Gordon · Ray Land | |
| Investigating Societies and Environments CD-ROM | 978-0-521-66995-5 | 2000 | Ray Land · Kathleen Gordon |