%0 conference poster %@ %A Fahrenholtz, S.,Kakuschke, A.,Griesel, S.,Proefrock, D.,Prange, A. %D 2008 %J 8. Symposium Massenspektrometrischer Verfahren der Elementspurenanalyse %N %P %T Concentrations of essential and non-essential elements in harbour porpoises (Phocoena phocoena) from the North and Baltic Seas %U %X