N. W. M. Pieterse and Smulders, P. T.,
“Activities in the Netherlands on the application of wind energy in developing countries”. Consultancy Services Wind Energy Developing Countries, Amersfoort, The Netherlands, p. 30 p. : fig., tab., 1980.
J. M. Kalbermatten, Julius, D. S., and Gunnerson, C. G.,
“Appropriate technology for water supply and sanitation : technical and economic options”, vol. no. 1. World Bank, Washington, DC, USA, p. iii, 124 p. : fig., tab., 1980.
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).
P. H. Local Wate City,
“Project report for the interim improvement of Tanay water district”. Local Water Utilities Administration, Quezon City, The Philippines, p. 70 p. in various pagings, 1980.
A. Breuer and Netzband, A.,
“Small scale irrigation”. German Appropriate Technology Exchange (GATE) /Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ), Eschborn, Germany, p. 97 p. : fig. tab., 1980.
C. I. Miller,
“Sociocultural and economic characteristics of conditions in Ancash and La Libertad, Peru with special emphasis on the Callejones de Huaylas and Conchucos : questions to be considered in an evaluation of CARE-sponsored water, sewage and heal”, vol. no. 1. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. v, 38 p.: fig., 1980.