共栖 发表于 2025-3-23 10:20:55
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https://doi.org/10.1007/978-3-658-21875-1As a first step, it was necessary to sort the material and to classify the specimens in successive stages. To do this, we employed our own staging and ageing method (Štěrba 1975, 1995), classifying the embryos and fetuses in the respective ontogenetic stages (Tables 1-4) by their external appearance, selected characteristics, size, and weight.连词 发表于 2025-3-24 00:55:48
https://doi.org/10.1007/978-3-031-24127-7In this part, we shall concentrate upon two major problem areas or objections that could be raised, viz., (1) the method used, particularly the part pertaining to the ageing, and (2) the duration of intrauterine development and estimation of the mating and calving seasons.florid 发表于 2025-3-24 03:45:09
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https://doi.org/10.1007/978-3-662-48101-1description is given of the whole embryo or fetus, its external characteristics and superficial structures. The subsequent paragraphs contain descriptions of the developmental stage of organ systems observed by us and supplemented by earlier data originating in the Zentrum der Morphologie der J.W. Goethe Universität in Frankfurt am Main.裂隙 发表于 2025-3-24 20:59:38
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