The historical record of PCB and PCDD/F deposition at Greifensee between 1848 and 1999 Publication Attachment: 04-239.pdf Authors: Zennegg, Markus, Kohler, Martin, Hartmann, Paul, Sturm, Michael, Gujer, Erika, Schmid, Peter, Gerecke, Andreas, Heeb, Norbert, Kohler, Hans-Peter, Giger, Walter Year: 2004