American Practical Navigator, H.O. 9, 1914

Complete section on methods for finding longitude, Article 336, page 2-5 of excerpts.
Refraction corrections, Article 296, page 6 of excerpts.
Dip corrections, Article 300, page 7 of excerpts.


Longitude and refraction, American Practical Navigator, H.O. 9, 1914
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Gary LaPook,
May 30, 2011, 11:31 PM
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