O. Magnussen,
«Principles of economic and financial evaluation of water supply schemes», in
Water master plans for Rukwa and Kigoma regions : interim report. Part IV. Selected working papers : A, 1980, p. Working paper no. 11 (34 p. in various pagings).
A. Pacey,
Rural sanitation : planning and appraisal. London, UK: IT Publications, 1980, p. 68 p.: fig., tab.
L. Vanderschmidt y Lent, M.,
«Systematic project design : a handbook for volunteers». Boston University, Center for Educational Development in Health, Boston, MA, USA, p. vii, 184 p.: fig., 1980.
R. E. Bigelow, Chiles, L., C. Ayad, S., Cavanagh, B., Manzer, C., y Bohumolski, C.,
«Tunisia : Care water projects ((microfiche))», vol. no. 10. USAID, Washington, DC, USA, p. 59 p. in various pagings, 1980.
G. E. Nepomuceno,
«Village water program». Philippines, Ministry of Local Governments and Community Development, Quezon City, The Philippines, p. 40 p.: fig., 1980.