Biblio

C. Lehmann y Tsukada, R., «The effect of rainwater harvesting on reducing poverty». S.n., S.l., p. 22 p.; 7 tab.; 3 fig., 2011.

D. Hailu, S. Smith, R. -, y Tsukada, R., «Small-scale water providers in Kenya : pioneers or predators?». UNDP (United Nations Development Programme), New York, NY, USA, p. 40 p.; 8 tab.; 7 fig., 2011.