| Publication Type: | Journal Article |
| Year of Publication: | 1902 |
| Authors: | A. E. Verrill |
| Journal: | American Journal of Science |
| Volume: | 13 |
| Pagination: | 75–78 |
| URL: | http://sdrv.ms/R9OJrT |
| Publication Type: | Journal Article |
| Year of Publication: | 1902 |
| Authors: | A. E. Verrill |
| Journal: | American Journal of Science |
| Volume: | 13 |
| Pagination: | 75–78 |
| URL: | http://sdrv.ms/R9OJrT |