Principal facts of the earth's magnetism and methods of determining the true meridian and the magnetic declination.
By: <Reprinted from United States magnetic declination tables and isogonic charts for 1902> <Reprinted from edition of 1914>
Publisher: Govt. Print. Off.
Published: 1919
Place of publication: Washington
Language: eng
Number of pages: 100
Subjects: Geomagnetism.
Notes: At head of title: Department of Commerce. U. S. Coast and geodetic survey. E. Lester Jones, superintendent.