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Wray, A.

Wray, A. et al., 1995. An overview of British aid for water in developing countries, London, UK: Overseas Development Administration (ODA). Available at: https://es.ircwash.org/sites/default/files/202.3-95OV-15051.pdf.

Fecha publicación: 31/12/2004

Wray, A., 1990. Technical brief no. 26 : Public standposts. Technical brief, no. 26, pp.p. 18-20: fig. Available at: https://es.ircwash.org/sites/default/files/TB26-1990-Public.pdf.

Fecha publicación: 30/12/2004

Wray, A., 1989. Water, engineering and development in Africa : proceedings of the 15th WEDC Conference, Kano, Nigeria, 3-7 April 1989, Loughborough, UK: Water, Engineering and Development Centre, Loughborough University of Technology, WEDC.

Fecha publicación: 31/12/1988

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