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![NAVPAC 4.1 - Celestial Navigation Software from HMNAO v.4.1 - HMNAO [2020] :: Морской трекер](http://seatracker.ru/pictures/59204dfafb655ac7c3837a6bef525463.png "NAVPAC 4.1 - Celestial Navigation Software from HMNAO v.4.1 - HMNAO [2020] :: Морской трекер")
NAVPAC 4.1 - Celestial Navigation Software from HMNAO v.4.1 - HMNAO [2020] :: Морской трекер
Celestial Navigation: A Complete Home Study Course, Second Edition: Burch, David, Burch, Tobias: 9780914025467: Amazon.com: Books
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NEW TECHNOLOGY FOR CELESTIAL NAVIGATION
