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  1. 11
    Argitaratua 1997
    Liburua

    Guidelines for drinking-water quality.
  2. 12
    Argitaratua 1993
    Liburua

    Guidelines for drinking-water quality.
  3. 13
    nork Loyd, Barry
    Argitaratua 1991
    Liburua

    Surveillance of drinking water quality in rural areas
  4. 14
    Argitaratua 1990
    Liburua

    The International drinking water supply and sanitation decade.
  5. 15
    Argitaratua 1984
    Liburua

    Guidelines for drinking-water quality
  6. 16
    Argitaratua 1981
    Liburua

    Drinking-water and sanitation, 1981-1990 a way to health.
  7. 17
    Argitaratua 1981
    Liburua

    Drinking-water and sanitation, 1981-1990 a way to health.
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