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Wang, C.

Wang, C., Zhu, X. & Xu, D., 1997. Intervention measures of environmental hygiene for raising the health quality of students in Chinese rural areas, Beijing, China: Chinese Academy of Prventive Medicine. Available at: https://es.ircwash.org/sites/default/files/203.2-97IN-13968.pdf.

Fecha publicación: 30/12/2004

Nyumbu, I.L. et al., 1990. Water supply and sanitation : handbook of financial principles and methods, Geneva, Switzerland: World Health Organization, Community Water Supply & Sanitation Unit. Available at: https://es.ircwash.org/sites/default/files/264.0-90WA-7554.pdf.

Fecha publicación: 29/12/2004

Nyumbu, I.L. et al., 1990. Approvisionnement public en eau et assainissement : principes et methodes de gestion financiere manuel, Geneva, Switzerland: World Health Organization, Community Water Supply & Sanitation Unit. Available at: https://es.ircwash.org/sites/default/files/264.0-90AP-8252.pdf.

Fecha publicación: 29/12/2004

Nyumbu, I.L. et al., 1990. Agua potable y saneamiento : manual de principios y metodos financieros, Geneva, Switzerland: World Health Organization, Community Water Supply & Sanitation Unit. Available at: https://es.ircwash.org/sites/default/files/264.0-90AG-8805.pdf.

Fecha publicación: 29/12/2004

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