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  1. Observations on terrestrial magnetism and on the deviations of the compasses of the United States iron clad Monadnock during her cruise from Philadelphia to San Francisco, in 1865 and 1866. By Wm. Harkness.
    By: Harkness, William,
    Publication info: Washington,Smithsonian Institution,1873
    Contributed by: University of California Libraries (archive.org)
    Subjects: Geomagnetism  Magnetism of ships  Monadnock (Ship)  Observations  
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