Contributions to terrestrial magnetism; the variation of the compass, as observed at fifty of the principal maritime stations from the earliest times to the present, together with equations for each station, from which values may be predicted and annual rates of change found., by United States. Hydrographic Office et al.

Title:	Contributions to terrestrial magnetism; the variation of the compass, as observed at fifty of the principal maritime stations from the earliest times to the present, together with equations for each station, from which values may be predicted and annual rates of change found.
Author:	United States. Hydrographic Office
Author:	Littlehales, G. W. (George Washington), 1860-1943
Note:	Govt. print. off., 1895

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Subject:	Compass
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