1. Nitrogen saturation in northern forest ecosystems: hypotheses and implications;Aber;Bioscience,1989
2. Aspects of the chemistry of ice, notably snow, on lakes;Adams,1987
3. Experiments with Brown Trout during Spring in Mountain Streams at Low pH and Elevated Levels of Iron, Manganese and Aluminium;Andersson,1984
4. Biological effects of changes in surface water acid-base chemistry;Baker,1990
5. Effects of Acid Precipitation on the Water Quality of Streams in the Laurel Hill Area, Somerset County, Pennsylvania, 1983–1986;Barker,1990