1. World Health Organisation, 1984,International Standards for Drinking Water, Geneva.
2. Addiscott, T., 1988, Farmers, fertilisers and the nitrate flood,New Scientist 120, 1633, 50.
3. Murray, L. R. and Siebert, B.D., 1962, Nitrate in underground waters of Central Australia,Aust. J. Sci. 25, 22.
4. Barnes, C. J., Jacobson, G., and Smith, G. D., 1992, The origin of high-nitrate groundwaters in the Australian arid-zone:J. Hydrology 137, 181.
5. Kurt, M., Dunn, I. J., and Bourne, J. R., 1987, Biological denitrification of drinking water using autotrophic organisms with H2 in a fluidized-bed biofilm reactor,Biotechnol. Bioeng. 29, 493.