The magnetic atlas, or Variation charts of the whole terraqueous globe : comprising a system of the variation & dip of the needle by which the observations being truly made, the longitude may be ascertained. By John Churchman, Fellow of the Russian Imperial Academy.

Bibliographic Details

Main Author:	Churchman, John, 1753-1805
Format:	eBook
Language:	English
Edition:	The third edition with additions.
Series:	Eighteenth century collections online.
Online Access:	Full text online