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  1. The factors of organic evolution.
    By: Spencer, Herbert,
    Publication info: New YorkD. Appleton1887
    Contributed by: Robarts - University of Toronto (archive.org)
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  2. First principles, by Herbert Spencer.
    By: Spencer, Herbert,
    Edition: 4th ed.
    Publication info: New York :D. Appleton and company,1898.
    Contributed by: University of California Libraries (archive.org)
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  3. First principles. / By Herbert Spencer, ..
    By: Spencer, Herbert,
    Edition: [4th ed.]
    Publication info: New York :D. Appleton and Company,1897.
    Contributed by: University of California Libraries (archive.org)
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  4. Illustrations of universal progress : a series of discussions / by Herbert Spencer ; with a notice of Spencer's "New system of philosophy."
    By: Spencer, Herbert,
    Publication info: New York :D. Appleton,1877.
    Contributed by: University of California Libraries (archive.org)
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  5. Illustrations of universal progress : a series of discussions by Herbert Spencer ; with a notice of spencer's "New system of philosophy".
    By: Spencer, Herbert,
    Publication info: New York :Appleton,1878.
    Contributed by: Kelly - University of Toronto (archive.org)
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  6. Land and labor in the United States, by Wm. Godwin Moody.
    By: Moody, William Godwin - Spencer, Herbert,
    Publication info: New York,C. Scribner's sons,1883.
    Contributed by: University of California Libraries (archive.org)
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  7. The principles of biology / by Herbert Spencer.
    By: Spencer, Herbert,
    Publication info: New York :D. Appleton and company,1896, c1866-67.
    Contributed by: University of California Libraries (archive.org)
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  8. The principles of biology / by Herbert Spencer.
    By: Spencer, Herbert,
    Publication info: New York :D. Appleton,1896.
    Contributed by: Gerstein - University of Toronto (archive.org)
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  9. The principles of biology / by Herbert Spencer.
    By: Spencer, Herbert,
    Publication info: New York :D. Appleton,1910 [c1898-1899]
    Contributed by: University of California Libraries (archive.org)
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  10. The principles of biology / by Herbert Spencer.
    By: Spencer, Herbert,
    Publication info: New York :D. Appleton and company,1896, c1866-67.
    Contributed by: MBLWHOI Library
    BHL Collections: MBLWHOI Library, Woods Hole
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  11. The principles of biology / by Herbert Spencer.
    By: Spencer, Herbert,
    Publication info: New York :D. Appleton,1896.
    Contributed by: Kelly - University of Toronto (archive.org)
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  12. The principles of biology, by Herbert Spencer.
    By: Spencer, Herbert,
    Publication info: New York,D. Appleton,1897.
    Contributed by: NCSU Libraries (archive.org)
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  13. The principles of biology, by Herbert Spencer.
    By: Spencer, Herbert,
    Edition: Rev. and enl. ed.
    Publication info: New York :D. Appleton and company,[c1898-99]
    Contributed by: University of California Libraries (archive.org)
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  14. The principles of biology, by Herbert Spencer.
    By: Spencer, Herbert,
    Edition: Rev. and enl. ed.
    Publication info: New York,D. Appleton and company,1898-1900.
    Contributed by: MBLWHOI Library
    BHL Collections: MBLWHOI Library, Woods Hole
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  15. The principles of biology.
    By: Spencer, Herbert,
    Publication info: New York,D. Appleton and Company,1881.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  16. The principles of biology.
    By: Spencer, Herbert,
    Publication info: New York,Appleton,1896.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  17. The principles of biology.
    By: Spencer, Herbert,
    Edition: Rev. and enl. ed.
    Publication info: New YorkD. Appleton1899-1902
    Contributed by: Trinity College - University of Toronto (archive.org)
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  18. The principles of biology.
    By: Spencer, Herbert,
    Publication info: New York,D. Appleton,1866-67.
    Contributed by: Cornell University Library
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  19. The principles of biology. By Herbert Spencer ...
    By: Spencer, Herbert,
    Publication info: New York :D. Appleton and Company,1866-67.
    Contributed by: University of California Libraries (archive.org)
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  20. Recent discussions in science, philosophy, and morals.
    By: Spencer, Herbert,
    Publication info: New York,Appleton,1871.
    Contributed by: Robarts - University of Toronto (archive.org)
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