The theory and practice of finding the longitude at sea or land: to which are added, various methods of determining the latitude of a place, and variation of the compass; with new tables. By Andrew Mackay, ...
MacKay, Andrew,1758-1809.
London : printed for J. Sewell, P. Elmsly, and J. Evans,
1793.
With a list of subscribers in vol. 1.
ESTC