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  1. Protoplasmic theory of life.
    By: Drysdale, J. G. S.
    Publication info: London,Bailliere, Tindall & Cox,1874.
    Contributed by: Francis A. Countway Library of Medicine (archive.org)
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  2. Protoplasmic theory of life.
    By: Drysdale, J. G. S.
    Publication info: London,Bailliere, Tindall & Cox,1874.
    Contributed by: University of California Libraries (archive.org)
    View Book