D. K. D. A. N. I. D. A. - Copenhagen y Rome, I. T. F. A. O. -,
«Do-it-yourself!! : an efficient durable but cheap water pump», vol. no. 1. Programme for Integrated Development of Artisanal Fisheries in West Africa (IDAF, Rome, Italy, p. 4 p.: 3 drwngs., 1993.
D. K. D. A. N. I. D. A. - Copenhagen, Water, Eand Minera, y Development, W. Affairs an,
«Phase III of the Rural Water Supply Programme in Iringa, Mbeya and Ruvuma regions : final report of the Second Annual Joint Tanzanian - Danish Review Mission, which took place in Tanzania from 24th August to 12th September 1992». DANIDA, Ministry of Foreign Affairs, Copenhagen, Denmark, p. 2 vol. (vi, 58, 55 p.) : tab., 1993.