International Council of Scientific Unions. Working Group on Methodology of Determination of Toxic Substances in the Environment Bezüge im Wissensnetz Administrative Überordnung der Körperschaft (1) GND-Körperschaften International Council of Scientific Unions. Scientific Committee on Problems of the Environment Homepage (1) GND-Körperschaften International_Council_of_Scientific_Unions._Scientific_Committee_on_Problems_of_the_Environment._Working_Group_on_Methodology_of_Determination_of_Toxic_Substances_in_the_Environment