Brauchwasser

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  •  The document is publicly available

    Biggetalsperre

    Ruhrverband
    Essen, [ca. 1998]
  •  The document is publicly available

    Ennepetalsperre

    Ruhrverband
    Essen, [ca. 2002]
  •  The document is publicly available

    Versetalsperre

    Ruhrverband
    Essen, [ca. 2005]