1. Acidification of lakes in Canada by acid precipitation and the resulting effects on fishes;Beamish;Wat. Air Soil Pollut.,1976
2. The distribution of atmospheric sulphates in Canada and its relationship to long-range tranport of air pollutants;Chung;Atmospheric Environment,1978
3. Gridded pollutant emissions in the U.S. and southern Canada East of the Rockies;Clark,1978
4. Acid precipitation in the northeastern United States;Cogbill;Wat. Resource Res.,1974
5. Influence of the atmosphere on lakes in the Sudbury area;Conroy,1975