D. E. G. A. T. E. - Eschborn y Naturgerechte Technologien, Bau- und Wirtschaftsberatung -Frankfurt, GE, TBW,
«Anaerobic treatment of municipal wastewater in UASB-reactors», vol. no. W6e. German Appropriate Technology Exchange (GATE) /Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ), Eschborn, Germany, p. 10 p. : 8 fig., 4 tab., 2001.
M. Anten,
«Development of sprinkler irrigation in mountain environments : experiences from Nothern Peru». SNV Netherlands Development Organization, The Hague, The Netherlands, p. 28 p. : fig., photogr., 2001.
P. Ball,
Drilled wells, vol. no. 6. St. Gallen, Switzerland: SKAT (Swiss Centre for Development Cooperation in Technology and Management), 2001, p. 72 p. : 61 fig., photogr., 13 tab.
PROTOS -Gent, BE, Agence pour la Coopération Technique Integrée,
Manuel pour les adductions villageoises. Gent, Belgium: PROTOS (Agence pour la Coopération Technique Integrée), 2001, p. xiii, 277 p. + 16 p. annexes : fig., tab.
af E. Petersens, Johansson, M., y Andersson, J.,
«Market survey : extremely low flush toilets plus urine diverting toilets and urinals for collection of black water and/or urine», vol. no. 2001:1. Water Revival Systems Uppsala (WRS), Uppsala, Sweden, p. 53 p. : fig., photogr., 2001.
D. D. Mara, Tayler, K., y Sleigh, A.,
«PC-based simplified sewer design». University of Leeds, Department of Civil Engineering, Leeds, UK, p. x, 110 p. : fig., tabs., 2001.