Piironen, J. & Holopainen, I. J. 1988: Length structure and reproductive potential of crucian carp (Carassius carassius (L.)) populations in some small forest ponds. Annales Zoologici Fennici 25: 203208.
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Raitaniemi, J., Rask, M. & Vuorinen, P. J. 1988: The growth of perch, Perca fluviatilis L., in small Finnish lakes at different stages of acidification. Annales Zoologici Fennici 25: 209219.
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Ylönen, H. 1988: Diel activity and demography in an enclosed population of the vole Clethrionomys glareolus (Schreb.). Annales Zoologici Fennici 25: 221228.
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Terhivuo, J. 1988: The Finnish Lumbricidae (Oligochaeta) fauna and its formation. Annales Zoologici Fennici 25: 229247.
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Eloranta, P. 1988: Kellicottia bostoniensis (Rousselet), a planktonic rotifer species new to Finland. Annales Zoologici Fennici 25: 249252.
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Laine, A., Orell, M. & Itämies, J. 1988: The distribution and ecology of the mite Ameronothrus dubinini Sitnikova 1977 (Acarina, Oribatei) in northern Finland. Annales Zoologici Fennici 25: 253256.
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Hoikkala, A. 1988: The importance of different courtship stimuli in the mating behaviour of European species of the Drosophila virilis group. Annales Zoologici Fennici 25: 257263.
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