| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Study guide for Judson, Deffeyes, and Hargraves Physical geology | 978-0-13-669630-8 (0-13-669630-9) | 1976 |
| Study guide for physical geology: Leet/Judson/Kaufman | 978-0-13-669747-3 (0-13-669747-X) | 1978 |
| Teacher's manual for Judson, Deffeyes, and Hargraves Physical geology | 978-0-13-669648-3 (0-13-669648-1) | 1976 |
L. S. · P S · P. Samson · Peter L. · Peter Samson