documents selected.
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Author(s): Hykeš, O. Title: [The frequency of heart-beat of the genus Daphnia (Crustacea) under the influence of some substances of the internal (mammalian) secretion] Subject(s): Heart rate Variation: Endocrine agents Journal Title Abbreviation: Biol. spisy zver. lék. Date of Publication: 1926 Pagination: 5: No. 3, 1–8. Language: Polish Type of Resource: Analytic Series/Volume/Page: Series 4/Volume 7/Page 361