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Technology for water supply and sanitation in developing countries : report of a WHO Study Group.

Gorde:
Xehetasun bibliografikoak
Erakunde egilea: WHO Study Group on Technology for Water Suooly and Sanitation in Developing Countries
Formatua: Liburua
Hizkuntza:ingelesa
Argitaratua: Geneva : World Health Organization, 1987.
Saila:Technical report series (World Health Organization) ; 742.
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