M. E. Bentley, Stallings, R. Y., and Gittelsohn, J.,
“Guidelines for the use of structured observations in health behavior intervention studies”. Johns Hopkins University, School of Hygiene and Public Health, Baltimore, MD, USA, p. iii, 119 p.: fig., 1990.
J. M. V. Oomen, de Wolf, J., and Jobin, W. R.,
Health and irrigation : incorporation of disease-control measures in irrigation, a multi-faceted task in design, construction, operation. Volume 1, vol. no. 45. Wageningen, The Netherlands: International Institute for Land Reclamation and Improvement, 1990, p. 2 vol. (304 p. ; 119 p.): fig., tab.
M. E. Bentley and 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.
S. Akhtar,
“National information and informatics policies in Africa : report and proceedings of a regional seminar, Addis Ababa, Ethiopia, 28 November - 1 December 1988”. International Development Research Centre (IDRC), Ottawa, Ont, Canada, p. vii, 298 p.: fig., tab., 1990.
B. Kittle and Gollnitz, W. D.,
“Operator evaluation of small systems”,
Journal American Water Works Association, pp. p. 40-45 : fig., photogr., 1990.
S. B. Mogane,
“Techniques for gathering socio-cultural data on water supply and sanitation programmes”. Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa, p. 31 p.: fig., tab., 1990.
S. Fry and Frelick, G.,
“A training guide on hygiene education”, vol. no. 60. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ca. 210 p., 1990.