S D · S. Drury · Stephen D. · Stephen Drury Smith
| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Stepping Stones: The Making of Our Home World | Paperback | 978-0-19-850807-6 (0-19-850807-7) | 2001 |
| Stepping Stones: The Making of Our Home World | Hardcover | 978-0-19-850271-5 (0-19-850271-0) | 1999 |