Lecture Emission impossible? On our understanding of the historical sources and emissions of PCBs at global scale. Breivik, K.; Pacyna, J.M.; Sweetman, A.,Jones, K.C.; Meijer, S.N.; Ockenden, W.A.; Grimalt, J.O.; Wania, F.; Daly, G.; Su, Y. Publication details Invited presentation at the Meteorological Service of Canada. Downsview, Ontario, Canada, 8 May, 2003.