4 steps to longitude
Subtitle: an exhibition to mark the bicentenary of the first successful trail in 1762 of John Harrison's fourth marine timekeeper : National Maritime Museum, Greenwich, 19th January to 30 September, 1 962
Publisher: National Maritime Museum
Published: 1962
Place of publication: Greenwich, London, England
Language: eng
Number of pages: 50
Subjects: Chronometers; Exhibitions; Nautical instruments; Longitude; Bibliography
Other titles: Four steps to longitude