1990
R. J. R. Rowles,
Drilling for water : a practical manual. Bedford, UK: Cranfield Press, 1990, p. vi, 180 p.: fig., tab.
F. Valiron,
Gestion des eaux : principes, moyens, structures, 2nd rev. ed.ª ed. Paris, France: Presses de l'Ecole Nationale des Ponts et Chaussees, 1990, p. 350 p.: 107 fig., 72 tab.
B. Carlsson y Drake, E.,
«Handbook for village water supply operators». Botswana, Ministry of Local Government and Lands, Unified Local Government Service, Gaborone, Botswana, p. 108 p.: ill., 1990.
C. B. Holmes,
The honest truth about lying with statistics. Springfield, IL, USA: Charles C. Thomas, 1990, p. ix, 82 p.: 6 fig.
R. Lambert,
How to make a rope-and-washer pump. London, UK: IT Publications, 1990, p. iv, 27 p.: fig., tab.
C. O. A. C. O. D. A. L. - Cali,
«Manual de instalaciones hidraulicas y sanitarias». Asociacion Colombiana de Ingenieria Sanitaria y Ambiental, Cali, Colombia, p. ca. 500 p. : fig., tab., 1990.
P. Ministerio PE,
«Manual del promotor DISABAR». Peru, Ministerio de Salud, Division de Saneamiento Basico Rural, Lima, Peru, p. 82 p. : drwng, tab., 1990.
A. van der Horst,
«Manual for the implementation of sanitary facilities at mosques», vol. no. 37. Ilaco, Arnhem, The Netherlands, p. ca. 60 p.: tech. drwngs, map, 1990.
B. Department BT,
«Manual on operation and maintenance of gravity flow water system». Bhutan, Department of Works and Housing, Public Health Engineering Division, Thimphu, Bhutan, p. 67 p. : drwngs, 1990.
M. E. Bentley y Herman, E.,
«Manuals for ethnographic data collection : experience and issues». Johns Hopkins University, School of Hygiene and Public Health, Baltimore, MD, USA, p. ii, 29 p. + annexes (ca. 10 p.), 1990.
M. C. Viland,
«Manuel pratique : controle bacteriologique de l'eau par la methode "milliva"». Deutsche Gesellschaft fur Technische Zusammenarbeit (GTZ), Eschborn, Germany, p. 34 p.: fig., drwng., 1990.
S. C. Reed,
Natural systems for wastewater treatment, vol. FD-16. Alexandria, VA, USA: Water Pollution Control Federation, 1990, p. v, 270 p.: fig., tab.
Z. Ministry o ZW,
«Project management handbook for water supply and sanitation projects». Zimbabwe, Department of Environmental Health Services, Harare, Zimbabwe, p. 136 p.: fig., 1990.
M. Q. Patton,
Qualitative evaluation and research methods, 2nd ed.ª ed. Newbury Park, CA, USA: SAGE Publications, 1990, p. 532 p.
E. Nissen-Petersen y Lee, M.,
«Rock catchment dam with self-closing watertap», vol. no. 3. ASAL Rainwater Harvesting, Nairobi, Kenya, p. 40 p. : fig., 1990.