1990
C. R. R.,
“Manejo irracional del recurso agua en el rio Cauca y sus cuencas tributarias : sector medio”. Fundacion para la Investigacion y Proteccion del Medio Ambiente, Cali, Colombia, p. 17 p.: fig., tab., 1990.
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 en 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.
Z. W. Associatio Harare,
“Marketing : how to find a market for your products?”. Association of Women's Clubs, Harare, Zimbabwe, p. video (20 min.): VHS, 1990.
P. H. J. Caplen,
“Micro hydro for an isolated rural water supply”,
Water resources journal, p. p. 34, 34a, 35: fig., tab., 1990.
M. Chaudhuri en Datta, A. K.,
“Microbial purification in slow sand filter”,
Environmental toxicity and water quality, pp. p. 239-247: 2 fig., 1990.
R. Alward, Odeyemi, O., Lawand, T., en Collett, R.,
“Microbiological aspects of solar water disinfection”, in
Solar water disinfection : proceedings of a workshop held at the Brace Research Institute, Montreal, Que., Canada, 15-17 August 1988, 1990, pp. P. 155-183: fig., tab.
J. C. Enderman, de Lavieter, L., Cals, J. E. H. M., van Vloten, A. A., en Drion, B.,
“Milieu-thesaurus : systeem van gecontroleerde termen voor het ontsluiten van milieu-informatie”. Centrale Ingang Milieu Informatie, Bilthoven, The Netherlands, p. various paging (loose leaf), 1990.
I. D. Yayasan Di Yogyakarta, Jakarta, I. D. U. N. I. C. E. F. -, en Jakarta, I. D. National D.,
“Monitoring and evaluation of public hydrants & water terminals in North Jakarta : final report”. Yayasan Dian Desa, Yogyakarta, Indonesia, p. ca. 140 p.: fig., tab., maps, 1990.