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The Description and Use of a New and Easy Formula, for Determining the Time of the Day
Samuel Dunn
其他書名
The Azimuth of the Sun, and the Latitude ... By Samuel Dunn, ...
出版author; and sold, 1777
URLhttp://books.google.com.hk/books?id=4qnKNHAPU0wC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN