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  1. Principles of immunology, by Howard T. Karsner and Enrique E. Ecker.
    By: Karsner, Howard Thomas, - Ecker, Enrique Eduardo,
    Publication info: London,J. B. Lippincott company[c1921]
    Contributed by: University of California Libraries (archive.org)
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  2. The principles of immunology.
    By: Karsner, Howard Thomas, - Ecker, Enrique E.,
    Publication info: Philadelphia,Lippincott[1921]
    Contributed by: Gerstein - University of Toronto (archive.org)
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