An essay on the variation of the compass
Subtitle: shewing how far it is influenced by a change in the direction of the ship's head, with an exposition of the dangers arising to navigators from not allowing for this change of variation
Series: Landmarks of science
Publisher: Readex Microprint
Published: 1969
Place of publication: New York
Language: eng
Format: Microform
Number of pages: 140
Notes: Originally published, Edinburgh, W. Blackwood and J. Murray, 1817.