Biological research reports from the University of Jyväskylä 4/1978 : On the productivity and ecology of zooplankton and its role as food for fish in some lakes i...
Koko nimi: Biological research reports from the University of Jyväskylä 4/1978 : On the productivity and ecology of zooplankton and its role as food for fish in some lakes in Central FinlandAsiasanat: aquatic ecology