H. N. Grupo Cola Tegucigalpa,
“Encuesta sobre uso, operacion y mantenimiento de letrinas en Honduras”. Grupo Colaborativo de Agua y Saneamiento de Honduras, Tegucigalpa, Honduras, p. 59 p.: fig., tab., 1993.
B. (Province) PK,
“Field manual for water and sanitation technician”. Pakistan, Local Government & Rural Development Dept., Water & Sanitation Cell, Quetta, Pakistan, p. i, 102 p.: fig., ill., 1993.
P. J. Hastings,
“GIS in sustainable highland development : experiences from the TA-HASD project”, in
Sustainable natural resource management and spatial planning in developing countries : geo-information technology perspective : selected papers presented at the International Seminar on Resource Management and Spatial Planning in Developing Countries : Ge, 1993, pp. P. 99-140: 6 fig., 4 tab., 14 maps.
D. Wichelns, Opaluch, J. J., Swallow, S. K., Weaver, T. F., and Wessells, C. W.,
“A landfill site evaluation model that includes public preferences regarding natural resources and nearby communities”,
Waste management & research, pp. p. 185-201: 2 fig., 6 tab., 1993.
R. Carter,
“Small-scale irrigation : the need for thorough feasbility studies”,
Waterlines, an international journal of water, sanitation and waste, pp. p. 12-14: 2 fig., photogr., 1993.
V. Cardenas, Saad, C., Varona, M., and Linero, M.,
“Waterborne cholera in Riohacha, Colombia, 1992”,
Bulletin of the Pan American Health Organization, pp. p. 313-330: 3 fig., 7 tab., 1993.