1. Adams MH (1959) Bacteriophages. Interscience, London
2. Alves PF, Tellam JH (2001) The impact of horse dung on urban groundwater quality in the Birmingham Triassic aquifer, UK. In: Thornton S, Oswald S (eds) Proc 3rd Int Conf on Groundwater Quality, Groundwater Quality 2001, University of Sheffield, June, pp 188–190
3. Anonymous (1982) The bacteriological examination of drinking water supplies—methods for the examination of waters and associated materials. Reports on Public Health and Medical Subjects, no 71. HMSO, London
4. Anonymous (1994) The microbiology of water 1994. Part 1. Drinking water. HMSO, London
5. Appelo CAJ, Postma D (1993) Geochemistry, groundwater and pollution. AA Balkema, Rotterdam, 536 pp