1. Duluth-Superior Urban Study. Interim rprt. on wtr. supply for the Duluth-Superior-Cloquet area US Army Corps of Engrs., St. Paul Dist., & EPA 1975
2. Direct Filtration of Lake Superior Water for Asbestiform Solids Removal.;Robinson;Jour. AWWA,1976
3. B aumann , E. R. Diatomite Filter for Asbestiform Fiber Removal From Water. Presented at AWWA Ann. Conf., Minneapolis, Minn. 1975
4. Asbestos Fibres in Beverages and Drinking Water.;Cunningham;Nature,1971
5. Ontario Intensifies Search for Asbestos in Drinking Water.;Kay;Wtr. Pollution Control,1973