Trigonometry, Sperical.
Wilson, Henry, mathematician.
Navigation new modelled. With tables. 9th edition, with the addition of spherical trigonometry, and astronomy. Revised and corrected by William Mountaine.
London: Je Mount and T. Page. 1769. xvi, 527, (1) pp. Plates. 8° **E,181.15
Same. 9th edition. London: J. Mount, T. Page and
(Continued )