Bestimmung und vererbung des geschlechts bei tieren, von Emil Witschi von Witschi, Emil, 1890-1971

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Contributions to the cytology of amphibian germ cells: I. Chromosomes in the spermatocyte divisions of five North American species of toads von Witschi, Emil

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Studies on sex differentiation and sex determination in amphibians. III. rudimentary hermaphroditism and Y chromosome in Rana temporaria von Witschi, Emil

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Studies on sex differentiation and sex determination in amphibians. I. Development and sexual differentiation of the gonads of Rana sylvatica von Witschi, Emil

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Studies on sex differentiation and sex determination in amphibians. II. Sex reversal in female tadpoles of Rana sylvatica following the application of high temperature von Witschi, Emil

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Handbuch Projektmanagement von Kuster, Jürg, Huber, Eugen, a., Robert Lippmann u

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Age of Sex-Determining Mechanisms in Vertebrates: Distribution of differentiation patterns indicates the evolutionary path of genes and chromosomes von Witschi, Emil

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The bronchial columella of the ear of larval ranidae von Witschi, Emil

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Patterns of Mammalian Reproduction . S. A. Asdell. Ithaca, N. Y.: Comstock Publishing Co., 1946. Pp. x + 437. (Illustrated.) $5.00 von Witschi, Emil

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Overripeness of the egg as a cause of twinning and teratogenesis: a review von WITSCHI, E

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Animal Cytology and Evolution . M. J. D. White. London: Cambridge Univ. Press, 1945. Pp. viii + 375. (Illustrated.) $7.50 von Witschi, Emil

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Les Changements de Sexe. Etienne Wolff von Witschi, Emil

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BIOLOGY OF UNDERWATER HEARING IN AMPHIBIANS von Witschi, Emil

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Contributions to the cytology of amphibian germ cells von Witschi, Emil

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Age of Sex-Determining Mechanisms in Vertebrates von Witschi, Emil

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Studies on sex differentiation and sex determination in amphibians. IX. Quantitative relationships in the induction of sex differentiation, and the problem of sex reversal in parab... von Witschi, Emil

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Seasonal Sex Characters in Birds and Their Hormonal Control von Witschi, Emil

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Studies on sex differentiation and sex determination in amphibians. V. Range of the cortex-medulla antagonism in parabiotic twins of Ranidae and Hylidae von Witschi, Emil

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Les Changements de Sexe von Witschi, Emil

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Patterns of Mammalian Reproduction von Witschi, Emil

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