G. E. Nepomuceno,
«Village water program». Philippines, Ministry of Local Governments and Community Development, Quezon City, The Philippines, p. 40 p.: fig., 1980.
W. Baumann y Karpe, H. J.,
Wastewater treatment and excreta disposal in developing countries : report on a research project. Eschborn, Germany: German Appropriate Technology Exchange (GATE) /Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ), 1980, p. 167 p.: fig.
IDRC -Ottawa, Ont., CA, International Development Research Centre,
« Wastewater treatment and resource recovery : report of a workshop on high-rate algae ponds, Singapore, 27-29 February 1980». International Development Research Centre (IDRC), Ottawa, Ont, Canada, p. 47 p., 1980.
M. Falkenmark, Lindh, G., De Mare, L., y Widstrand, C.,
Water conflicts and research priorities, vol. no. 2. Oxford, UK: Pergamon, 1980, p. viii, 199 p. : fig., tab.
V. Williams,
«Water treatment plant operation (rapid sand filter) : a training/job manual». Pan American Health Organization, Division of Environmental Health Protection, Bridgetown, Barbados, p. 72 p.: fig., 1980.