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United States Magnetic Declination Tables and Isogonic Charts for 1902
Louis Agricola Bauer
其他書名
And, Principal Facts Relating to the Earth's Magnetism
出版U.S. Government Printing Office, 1902
URLhttp://books.google.com.hk/books?id=ar0MAAAAYAAJ&hl=&source=gbs_api
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