The navigator's guide : to the Oriental or Indian seas : or, the description and use of a variation chart of the magnetic needle, designed for shewing the longitude, throughout the principal parts of the Atlantic, Ethiopic, and Southern Oceans ; Within a degree, or sixty miles. With an introductory discourse, concerning the discovery of the magnetic variation, the finding of the longitude thereby, and several useful Tables
S. Dunn
Bok Engelsk 1775