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  1. 1

    Estudios sobre el ecosistema pelágico del N. E. de Venezuela

    Published 1965
    Book
  2. 2

    Ergebnisse der limnologie by Elster, H. J, Ohle, W

    Published 1978
    Book
  3. 3

    Phosphorus in freshwater ecosystems by Persson, Gunnar, Jansson, Mats

    Published 1988
    Book
  4. 4

    Colacmar

    Published 1997
    Book