| Trích dẫn | Dehn, L., G.G. Sheffield, E.H. Follmann, L.K. Duffy, D.L. Thomas and T.M. O'Hara, 2007 Feeding ecology of phocid seals and some walrus in the Alaskan and Canadian Arctic as determined by stomach contents and stable isotope analysis. Polar Biol. 30:167-181. |
| Tài liệu tham khảo | 78072 Dehn, L., G.G. Sheffield, E.H. Follmann, L.K. Duffy, D.L. Thomas and T.M. O'Hara, 2007 |
| Trang | 173 |
| Named Used as Valid | Phoca vitulina |
| Địa phương | |
| Distribution | Copper River Delta, Alaska, USA. |