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Filters: Keyword is design and Author is Gavin, J.  [Clear All Filters]
Gavin, J., Hockley, T., y Joyce, S., «Community sanitation improvement and latrine construction program : a training guide», vol. no. 83. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ca. 520 p.: fig., tab., 1993.
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