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U.S. Naval Observatory
U.S. Naval Observatory
The United States Naval Observatory (USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Departme...
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E-books
Lifestyle, Hobbies and Leisure
Transport: general interest
Ships and boats: general interest
Technology, Engineering, Agriculture, Industrial processes
Transport technology and trades
Shipbuilding technology, engineering and trades
Navigation and seamanship

Author's Books

2012 U.S. Naval Observatory Nautical Almanac
E-book
2012 U.S. Naval Observatory Nautical Almanac
U.S. Naval ObservatoryU.S. Naval Observatory
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