Attributes / relations provided by
♦ 1Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 2Feeding habits of bearded seals (Erignathus barbatus) from the Svalbard area, Norway, A. M. Hjelset1, M. Andersen, I. Gjertz, C. Lydersen and B. Gulliksen, Polar Biology, Volume 21, Number 3 / February, 1999, pages 186-193
♦ 3Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005).
Host-Parasite Database of the Natural History Museum, London