| Referens | Derocher, A.E. and I. Stirling, 1994 Age-specific reproductive performance of female polar bears (Ursus maritimus). J. Zool. Lond. 234:527-536. |
| Ref. | 120447 Derocher, A.E. and I. Stirling, 1994 |
| Sida | 534 |
| Named Used as Valid | Ursus maritimus |
| Observationsplats | |
| Distribution | Hudson Bay, Canada |