Издание на английском языке the book is a practical guide to spherical trigonometry. the author shares his personal experience and explains that learning and mastering the topic requires several years of study and practice, as well as time to write the book. the book...
Издание на английском языке the book is a guide to celestial navigation, covering the theory, instruments, and practical methods of determining a vessel's position using celestial bodies. it covers the basics of astronomy, coordinate systems, the motion of stars and...
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