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The influence of yeast upon fertility and hatchability of hens' eggs.
By: Lewis, Harry Reynolds,
Publication info: New York,Fleischmann Co.[192-?]
Contributed by: Cornell University Library
Subjects: Birds Embryology Feeding and feeds Fertility Poultry Yeast
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The law of births and deaths; being a study of the variation in the degree of animal fertility under the influence of the environment, by Charles Edward Pell.
By: Pell, Charles Edward.
Publication info: London,T. F. Unwin, ltd.[1921]
Contributed by: University of California Libraries (archive.org)
Subjects: Fertility
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The population problem; a study in human evolution.
By: Carr-Saunders, A. M.
Publication info: Oxford,Clarendon Press,1922.
Contributed by: NCSU Libraries (archive.org)
Subjects: Anthropology Biology Evolution Fertility Population
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The population problem; a study in human evolution.
By: Carr-Saunders, A. M.
Publication info: Oxford :Clarendon Press,1922.
Contributed by: University of California Libraries (archive.org)
Subjects: Anthropology Biology Evolution Fertility Population
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The population problem; a study in human evolution.
By: Carr-Saunders, A. M.
Publication info: Oxford,Clarendon Press,1922.
Contributed by: Kelly - University of Toronto (archive.org)
Subjects: Anthropology Biology Evolution Fertility Population
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