GEAKE, A., 1987. Low-technology sanitation affecting groundwater quality. IN: Pickford, J. (ed). Rural water and engineering development in Africa: Proceedings of the 13th WEDC International Conference, Lilongwe, Malawi, 6-10 April 1987, pp.62-65.
This is a conference paper.
The research work in Peru was carried out by the British Geological Survey with financial support from the British Overseas Development Administration.