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* [http://www.lifewater.org/resources/rws1/rws1p4.pdf Elegir dónde colocar las tomas.] Agua para el mundo.
* [http://www.samsamwater.com/library/TP40_11_Surface_water.pdf Surface water intake and small dams.] Nhamo Masanganise.
Translated by Carolina Genson. Masters of Translation. University of New South Wales.