The proportion of the sexes produced by whites and coloured peoples in Cuba : [abstract] / by Walter Heape.

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The proportion of the sexes produced by whites and coloured peoples in Cuba : [abstract] / by Walter Heape. In copyright. Source: Wellcome Collection.

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This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.