| Publication Type: | Journal Article |
| Year of Publication: | 1914 |
| Authors: | Cockerell, T.Dru Alison |
| Journal: | Proceedings of the Academy of Natural Sciences of Philadelphia |
| Volume: | 66 |
| Pagination: | 634-648 |
| Publication Type: | Journal Article |
| Year of Publication: | 1914 |
| Authors: | Cockerell, T.Dru Alison |
| Journal: | Proceedings of the Academy of Natural Sciences of Philadelphia |
| Volume: | 66 |
| Pagination: | 634-648 |
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