| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Speleology: Caves & the Cave Environment | 978-O-939748-46-4 (O-939748-46-O) | 1997 | George W. Moore · National Speleological Society |
G. N. · G S · G Sullivan · n/s · N. Sullivan · Nicholas Sullivan