Aquatic Environment and Differentiation of Vibrissae: Comparison of Sinus Hair Systems of Ringed Seal, Otter and Pole Cat von Hyvärinen, H., Palviainen, A., Strandberg, U., Holopainen, I.J.

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Toxic effects of mining effluents on fish gills in a subarctic lake system in NW Russia von Tkatcheva, Victoria, Hyvärinen, Heikki, Kukkonen, Jussi, Ryzhkov, Leonid P., Holopainen, Ismo J.

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Anaerobic wintering of crucian carp ( Carassius carassius L.)-I. Annual dynamics of glycogen reserves in nature von Hyvärinen, H, Holopainen, I.J, Piironen, J

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Seasonal feeding activity and ontogenetic dietary shifts in crucian carp, Carassius carassius von Penttinen, O.P. (Joensuu Univ. (Finland). Dept. of Biology), Holopainen, I.J

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An experimental study of body size and food size relations in crucian carp, Carassius carassius von Paszkowski, C.A. (Alberta Univ., Edmonton (Canada). Dept. of Zoology), Tonn, W.M, Holopainen, I.J

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Anaerobic wintering of crucian carp ( Carassius carassius L.)—II. Metabolic products von Holopainen, I.J., Hyvärinen, H., Piironen, J.

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