Terrestrial magnetism.
Secular variation of the magnetic declination in the United States and at some foreign stations.
Report by Charles A. Schott.

APA Citation

U.S. Coast and Geodetic Survey. (1890). Terrestrial magnetism: Secular variation of the magnetic declination in the United States and at some foreign stations. 7th ed. Washington: Govt. Print. Off..

MLA Citation

U.S. Coast and Geodetic Survey. Terrestrial Magnetism: Secular Variation of the Magnetic Declination In the United States And At Some Foreign Stations. 7th ed. Washington: Govt. Print. Off., 1890.

Warning: These citations may not always be complete (especially for serials).