1981
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« On-site sanitation and groundwater quality : a methodology for monitoring ». International Reference Centre for Waste Disposal, Duebendorf, Switzerland, p. 78 p.: fig., tab., 1981.
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« Parda and some health practices in two conservative rural communities in Bangladesh : paper presented at the First Asian Conference on Diarrhoeal Disease Research , Dhaka, 16-20 Feb. 1981 ». p. 4 p. [P. 212-218], 1981.
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« Perbaikan kampung - kampung improvement Bogor, Tangerang, Bekasi, Cirebon : case study MCK ». Joint Urban Development Consultants, Bogor, Indonesia, 1981.
J. Haratani, Viveros-Long, A. M., et de Gonzales, A. M. Becerra Ma,
« Peru : CARE OPG Water Health Services Project », vol. no. 24. USAID, Washington, DC, USA, p. 16, [36] p., 1981.
C. B. Lugt,
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W. R. C. Kayombo,
Pipe materials in transmission mains, vol. no. 6. Tampere, Finland: Tampere University of Technology, Dept. of Civil Engineering, 1981, p. iii, 65 p. : fig., tab.
E. H. Anyahuru,
« Pipe-borne water supply in a traditional society : Nigerian condition », in
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S. K. Runyoro,
« Pit latrine emptying ». Loughborough University of Technology, Department of Civil Engineering, Loughborough, UK, p. viii, 94 p.: fig., tab., 1981.
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« Pratique du biogaz dans le Tiers-monde : Chine, Inde, Haute-Volta, Senegal », vol. 17. ENDA Tiers Monde, Dakar, Senegal, p. 49 p.: ill., 1981.
H. A. Sabannavar,
« Presedimentation tanks for high turbid raw waters »,
Journal of Institution of Engineers (India). EN, p. p. 67-74, 1981.
UN Economic Commission for Asia and the Pacific -Bangkok,TH, ESCAP,
« Proceedings of the expert group meeting on water pricing : held at Bangkok, Thailand, from 13 to 19 May 1980 », vol. no. 55. United Nations, New York, NY, USA, p. iv, 83 p., 1981.
C. R. Lawrence et Hughes, R. J.,
« Proceedings of the groundwater pollution conference : Perth, Western Australia, 19-23 February 1979 », vol. no. 1. Australian Government Publishing Service, Canberra, ACT, Australia, p. xi, 544 p. : fig., tab., 1981.
Australian Water Resources Council -Canberra, ACT, AU,
« Proceedings of the groundwater recharge conference 1980 : held at James Cook University, Townville, Queensland, 14-18 July 1980 », vol. no. 3. Australia, Department of National Development and Energy, Canberra, ACT, Australia, p. viii, 281 p., 1981.
UN Economic Commission for Asia and the Pacific -Bangkok,TH, ESCAP et United Nations -New York, NY, US,
« Proceedings of the seventh session of the Committee on Natural Resources », vol. no. 54. United Nations, New York, NY, USA, p. viii, 146 p., 1981.