%0 conference poster %@ %A Siebert, U.,Fonfara, S.,Hasselmeier, I.,Das, K.,Wohlsein, P.,Harder, T. %D 2004 %J ECS Annual Conference 2004 %N %P %T Investigations on the Development oF the Health status of harbour Seals in the Year of the PDV-Seal Die-off in 2002 %U %X