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  1. On certain problems of vertebrate embryology /
    By: Beard, John, - Royal College of Physicians of Edinburgh.
    Publication info: Jena :G. Fischer,1896.
    Contributed by: Royal College of Physicians in Edinburgh (
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  2. The span of gestation and the cause of birth : a study of the critical period and its effects in mammalia / by John Beard.
    By: Beard, John,
    Publication info: Jena :G. Fischer,1897.
    Contributed by: Francis A. Countway Library of Medicine (
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