FishBase References for Lappalainen, A., M. Rask, H. Koponen and
S. Vesala, 2001

Ref. No. Title
91817 Relative abundance, diet and growth of perch (Perca fluviatilis and roach (Rutilus rutilus at Tvärminne, northern Baltic Sea, 1975 and 1997: responses to eutrophication?.
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