| Trích dẫn | Scheffer, V.B. and F. Wilke, 1953 Relative growth of northern fur seal. Growth 17:129-145. |
| Tài liệu tham khảo | 74630 Scheffer, V.B. and F. Wilke, 1953 |
| Trang | 129 |
| Named Used as Valid | Callorhinus ursinus |
| Địa phương | |
| Distribution | Pribilof Island, Alaska. |