Terrestrial magnetism.
Subtitle: Magnetic declination in the United States for January 1, 1920
By: by Daniel L. Hazard.
Contributors: Hazard, Daniel Lyman, 1865-
Series: Special publication / United States.  Coast and Geodetic Survey; 90.
Publisher: U.S. Govt. Print. Off.
Published: 1922
Place of publication: Washington
Language: eng
Number of pages: 30
Subjects: Geomagnetism -- United States.
Other titles: Magnetic declination in the United States.
Notes: At head of title: Serial no. 215.  Department of Commerce.  U.S. Coast and Geodetic Survey.  E. Lester Jones, Director.
Running title: Magnetic declination in the United States.