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Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 2000)

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An introduction to heredity and genetics; a study of the modern biological laws and theories relating animal & plant breeding - Lochhead, W. (1920)

An introduction to the study of embryology - Haddon, Alfred C. (Alfred Cort), 1855 -1940 (Griffin, 1887)

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