%0 conference poster %@ %A Das, K., Lepoint, G., Fonfara, S., Thome, J.-P., Siebert, U. %D 2005 %J 16th Biennal Conference on the Biology of marine Mammals %T Mercury, polychlorobiphenyls and stable isotops in the blood of harbour seals (Phoca vitulina) from the southern North Sea %U %X