Hackert, F. (1935). Erbhygienische Untersuchungen an Hilfsschulkindern in der Stadt Essen. Postberg.
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Citação norma Chicago
Hackert, Franz. Erbhygienische Untersuchungen an Hilfsschulkindern in Der Stadt Essen. Bottrop i. W: Postberg, 1935.
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Citação norma MLA
Hackert, Franz. Erbhygienische Untersuchungen an Hilfsschulkindern in Der Stadt Essen. Postberg, 1935.
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Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.