也許更便宜
- A New and Easy Method of Finding the Longitude at Sea, with Like Accuracy That the Latitude Is Found. Adapted to General Use, by T. Kean
- NTD$1077
- 商品搜尋日04-10
- Azimuth and Hour Angle for Latitude and Declination; or, Tables for Finding Azimuth at sea by Means of the Hour Angle, in all Navigable Latitudes, at
- NTD$1152
- 商品搜尋日03-07
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