1. 1
   A taxonomic study on fresh-water sculpins of genus Cottus Linnaeus, 1758 (Cottus gobio L. and Cottus poecilopus Heck.) in Poland

   by Witkowski, Andrzej, dr ichtiologii
   Published 1979

   Wrocław : Wydawn. Uniwersytetu Wrocławskiego, 1979.

   1 online resource (93 pages, [1] folded leaf of plates) : illustrations, maps.

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2. 2
   An experimental study on the timing of breeding and migration in the three-spined stickleback (Gasterosteus aculeatus L.)

   by Baggermann, Bertha
   Published 1957

   1957.

   1 online resource (213 p.)

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3. 3
   On the utilization of oxygen and regulation of breathing in some aquatic animals

   by Dam, Levie van
   Published 1938

   Groningen : Drukkerij Volharding, 1938.

   1 online resource (143 p.) : ill.

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4. 4
   Los peces de la familia Sternopygidae de Venezuela : incluyendo una descripción de la osteología de Eigenmannia virescens y una nueva definición y clasificación del orden Gymnotifo...

   by Mago Leccia, Francisco
   Published 1978

   Caracas, Venezuela : Asociación Venezolana para el Avance de la Ciencia, 1978.

   1 online resource (89 leaves) : illustrations

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   Center for Research Libraries: v.29, suppl. 1 (1978)
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