1. Abrahamsen, G., Hovland, J. and Hagvar, S. (1980) Effects of artificial rain and liming on soil organisms and the decomposition of organic matter. In T.C. Hutchinson and M. Havas (eds) Effects of acid precipitation on terrestrial ecosystems, Plenum Press, New York, pp. 341–62
2. Abrahamsen, G., Staunes, A. and Bjor, K. (1980) Interaction between simulated rain and barren rock surface. Water Air Soil Poll, 11, 191–200
3. Abrahamsen, H. and Matzow, D. (1983) Use of lime slurry for deacidification of running water. Verh. Int. Verein. Limnol., 22
4. Alabaster, J.S. and Lloyd, R. (1980) Water quality criteria for freshwater fish. FAO, Butterworths, London
5. Alabaster, J.S. and Lloyd, R. (1982) Water quality criteria for freshwater fish. FAO, Butterworths, London, 361pp.