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  1. By: Zippi, P. A. - Ontario Water Resources Commission. - Ontario. Ministry of the Environment.
    Publication info: [Toronto], Environment Ontario, 1991
    Holding Institution: Ontario Ministry of the Environment
    Subjects: Acid pollution of rivers, lakes, etc  Lake sediments  Ontario  Palynology  Zygnemataceae  
  2. By: Transeau, Edgar Nelson,
    Publication info: Columbus, Ohio State University Press, 1951
    Holding Institution: MBLWHOI Library
    Subjects: Algae  Zygnemataceae  
  1. By: Pereira, Jeferson Luizi - Branco, Luis Henrique Zanini
    Type: Article
    In: Hoehnea
    Date: 2010-09-01
    Subjects: Flora  Spirogyra  subaérea  Zygnemataceae  
  2. By: Pereira, Jeferson Luizi - Branco, Luis Henrique Zanini
    Type: Article
    In: Hoehnea
    Date: 2007-01-01
    Subjects: Brasil  Sirocladium robustum  solo  Zygnemataceae