| نقل قول | Markussen, N.H., A. Bjorge and N.A. Oritsland, 1989 Growth in harbour seals (Phoca vitulina) on the Norwegian Coast. Journal of Zoology 219:433-440. |
| مرجع | 3741 Markussen, N.H., A. Bjorge and N.A. Oritsland, 1989 |
| Page | |
| Named Used as Valid | Phoca vitulina |
| Locality | |
| Distribution | Norway. |