Biblio

J. G. Orozco, Alberts, H., Sandiford, P., and Gorter, A., “The Nicaraguan rope pump”, Waterlines, an international journal of water, sanitation and waste, pp. p. 27-30: 4 fig., ill., photogr., 1993.

J. van der Heide, Orozco, J. G., and van Wasbeek, D., Evaluacion hidraulica de plantas potabilizadoras de filtracion rapida en Nicaragua, vol. no. 40. Delft, The Netherlands: Delft University of Technology, Department of Civil Engineering, 1991, p. 34 p. : 16 fig., 7 tab.