P. E. C. E. P. I. S. - Lima, Lima, P. E. U. N. I. C. E. F. -, and PE, P. Ministerio,
“Agua y salud”. CEPIS (Centro Panamericano de Ingenieria Sanitaria y Ciencias del Ambiente), Lima, Peru, p. 17 p.: ill., 1991.
A. Mitra,
“Awareness building for community participation”, in
Infrastructure for low-income communities : proceedings of the 16th WEDC conference : Regional Centre for Urban and Environmental Studies (RCUES), Osmania University, Hyderabad, India, 27-31 August, 1990, 1991, pp. P. 161-164: photogr.
G. H. Ghana Wate Accra, World Bank -Washington, DC, US, and CIDA -Gatineau, Que, CA, Canadian International Development Agency,
“Bolgatanga Community Water Supply and Sanitation Management Project : progress report, January, 1990 - December, 1990 : with review of implementation and problem resolution methods”. Bolgatanga Community Water Supply and Sanitation Pilot Project, Bolgatanga, Ghana, p. 21 p. + 12 p. ann.: 1 fig., 1 tab., 1991.
H. Hawes, Nicholson, J., and Bonati, G.,
“Children, health and science : child-to-child activities and science and technology teaching”, vol. no. 41. UNESCO, Division of Science, Technical and Environmental Education, Paris, France, p. iv, 122 p.: drwng, fig., 1991.