n/s · National Society · S S
Cave Books · National Speleological Society
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Proceedings: 15th International Congress of Speleology, Kerrville, Texas, United States of America, July 19-26, 2009 | 978-1-879961-33-3 | 2009 | |
| Proceedings: 15th International Congress of Speleology, Kerrville, Texas, United States of America, July 19-26, 2009 | 978-1-879961-34-0 | 2009 | |
| Proceedings: 15th International Congress of Speleology, Kerrville, Texas, United States of America, July 19-26, 2009 | 978-1-879961-35-7 | 2009 | |
| Speleology: Caves & the Cave Environment | 978-0-939748-46-4 | 1997 | George W. Moore · G. Nicholas Sullivan |