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Frimpong, O.

Frimpong, O. et al., 2003. Marketing of household toilets in Ghana, Loughborough, UK: Water, Engineering and Development Centre, Loughborough University of Technology, WEDC. Available at: https://es.ircwash.org/sites/default/files/Obika-2003-Marketing.pdf.

Fecha publicación: 01/01/1970

Frimpong, O., 1995. Participatory tools kit : user's guide, Kumasi, Ghana: Training Research and Networking for Development (TREND). Available at: https://es.ircwash.org/sites/default/files/205.1-95PA-14640.pdf.

Fecha publicación: 30/12/2004

Frimpong, O., 1991. The problem of women's involvement in water supply and sanitaion in Ghana : the wayout. , pp.p. 2-3.

Fecha publicación: 30/12/2004

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