Author: LITTLEHALES, G.W. [GEORGE WASHINGTON]
Title: Contributions to Terrestrial Magnetism, the Magnetic Dip or Inclination: As Observed at Thirty Important Maritime Stations, Together with an Investigation of the Secular Change in the Direction of a Freely Suspended Magnetic Needle at 29 of the Stations.
Description: Washington, United States Hydrographic Office. 1897, First Edition. Soft cover, 8vo - over 7¾" - 9¾" tall. Book, 50 pages, one large coloured folding map. Disbound from a larger volume, lacking the rear wrapper. Good.

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