Short, easy, and improved method of finding the apparent time at ship.
Subtitle: Rapid calculation of apparent time for finding the longitude, with explanations and examples in English, French, German, Italian and Spanish.
Edition: Rev. ed., with additional tables ...
Publisher: D. M'Gregor & co., ltd. [etc.,etc.]
Published: 1920
Place of publication: Glasgow
Language: eng
Number of pages: 53
Subjects: Navigation -- Tables.; Time.; Longitude.
Genres: Tables.