| *Studiën over flora en fauna
van het Zuidlaarder Meer B.Havinga pp 188 hc M.de Waal Groningen, 1919 |
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Marine plankton, a practical guide
G.E.& R.C.Newell pp 244 hc 5e dr London, 1986
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| Marine biology, function, biodeversity, ecology
J.S.Levinton pp 420 hc Oxfort University Press New York/Oxford, 1995 |
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