Institution: | 1. Dynamic Corp., 11140 Rockville Pike, Rockville, MD 20852, USA;2. Umweltbundesamt, Bismarckplatz 1, D - 1000 Berlin 33, FRG;3. Canada Centre for Inland Waters, P. O. Box 5050 867 Lakeshore Rd., Burlington, Ontario L7R 4A6, Canada;4. Formerly of 2; now Environmental Chemicals Directorate, Organization for Economic Cooperation and Development, 2 Rue Andre Pascal, F - 75775 Paris Cedex 16, France |