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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Cruz-Rivera Reynaldo - Ertel, Jürgen
    Type: Article
    In: Revista internacional de contaminación ambiental
    Date: 2008-08-01
  2. By: Cruz-Rivera Reynaldo - Ertel, Jürgen
    Type: Article
    In: Revista internacional de contaminación ambiental
    Date: 2010-05-01