Navigation. **E.181.5 =**E.181.6 Bowditch, Nathaniel, LL.D. 1773-1838.
The improved practical navigator. Added, new tables. Originally written and calculated by Nathaniel Bowditch; revised, re-calculated, and newly ar-= ranged, by Thomas Kirby.
London: James and John Hardy. 1802. 22, (2), 304, (250) pp. Plates. Diagrams. 8°.