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Filters: Keyword is springwater tapping and Author is Helvetas -Yaounde, CM  [Clear All Filters]
1985
C. M. Helvetas - Yaounde, Helvetas -Zurich, CH, Swiss Association for International Cooperation, and Gallen, C. H. S. K. A. T. - St., Manual for rural water supply : with many detailed constructional scale-drawings, 5th ed.th ed. St. Gallen, Switzerland: SKAT (Swiss Centre for Development Cooperation in Technology and Management), 1985, p. 175 p., [10] fold-out techn. drwngs: fig.
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