| Publication Type: | Journal Article |
| Year of Publication: | 1977 |
| Authors: | F. W. Wagner |
| Journal: | Bulletin of the Association for Mexican Cave Studies |
| Volume: | 6 |
| Pagination: | 39-48 |
| URL: | http://www.amcs-pubs.org/bul/bul6.pdf |
| Publication Type: | Journal Article |
| Year of Publication: | 1977 |
| Authors: | F. W. Wagner |
| Journal: | Bulletin of the Association for Mexican Cave Studies |
| Volume: | 6 |
| Pagination: | 39-48 |
| URL: | http://www.amcs-pubs.org/bul/bul6.pdf |