The logic behind extension. Keynote address to the International Meeting on Extension and Community Participation in the Slow Sand Filtration Project

N.G. Roling

    Research output: Chapter in Book/Report/Conference proceedingConference paperAcademic

    Original languageEnglish
    Title of host publicationWHO International Reference Center for Community Water Supply, The Hague, 1978
    Publication statusPublished - 1978

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