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Tools for assessing the O&M status of water supply and sanitation in developing countries / World health organization.
- World health organization (WHO),
- 2000.
- Geneva :
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Indoor air pollution and child health in Pakistan : report of a seminar held at the Aga Khan university, Karachi, Pakistan, 29 September 2005 / [by Tauseef Ahmad Khan and Anita K.M. Zaidi].
- World health organization (WHO),
- cop. 2006.
- Geneva :