The method of finding the longitude at sea, by time-keepers: to which are added, tables of equations to equal altitudes. More extensive and accurate than any hitherto published. By William Wales, ...
Wales, William,1734?-1796.
London : printed by C. Buckton, for the author; and sold by him in Christ's Hospital: also by F. Wingrave, J. Johnson, W. Richardson,
1794.
ESTC