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  1. 1
    by Gellert, Georg, 1949-
    Published 1985
    Bonn : G. Gellert, 1985.
    146 p. : ill. ; 21 cm.
  2. 2
    by Odermatt, Josef Meinrad, 1934-
    Published 1970
    Basel : Birkhäuser, 1970.
    75 p. : ill. ; 21 cm.
  3. 3
    Stuttgart, E. Nägele, 1905.
    viii, 180 p. map. 25 cm.
  4. 4
    by Herbst, V. (Volkhard)
    Published 1982
    Hildesheim : Niedersächsisches Wasseruntersuchungsamt, 1982.
    159 p. : ill. ; 21 cm.
  5. 5
    by Niklaus, Markus
    Published 1967
    Bern : Kommissionsverlag, Geographischer Verlag Kümmerly & Frey, 1967.
    116 p. : ill. ; 30 cm.
  6. 6
    Published 1991
    Pallanza : Istituto italiano di idrobiologia, 1991.
    79 p. ; 24 cm.
  7. 7
    by Nydegger, Paul
    Published 1957
    Thun [1957]
    80 p. graphs. 20 cm.
  8. 8
    by Weber, Hanspeter, 1951-
    Published 1981
    Switzerland : Eidgenössische Technische Hochschule Zürich, 1981.
    204 p. : ill. ; 29 cm.

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