I. Fraenkel, P. I. B. Windpumps [fotocopiado]: A guide for development workers / Peter Fraenkel ... [et al.]. Stockholm : Intermediate Technology Publications in Association with the Stockholm Environment Institute.
Citación estilo ChicagoI. Fraenkel, Peter II. Barlow. Windpumps [fotocopiado]: A Guide for Development Workers / Peter Fraenkel ... [et Al.]. Stockholm : Intermediate Technology Publications in Association with the Stockholm Environment Institute.
Cita MLAI. Fraenkel, Peter II. Barlow. Windpumps [fotocopiado]: A Guide for Development Workers / Peter Fraenkel ... [et Al.]. Stockholm : Intermediate Technology Publications in Association with the Stockholm Environment Institute.
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