Distribution of the magnetic declination in the United States for January 1, 1915 with isogonic chart and secular change tables
By: by Daniel L. Hazard.
Edition: 2nd ed.
Series: Special publication -- no. 33; Serial -- no. 126; Special publication (U.S. Coast and Geodetic Survey) -- no. 33.; Serial (U.S. Coast and Geodetic Survey) -- no. 126.
Publisher: U.S. Govt. Print. Off.
Published: 1920
Place of publication: Washington, D.C
Language: eng
Number of pages: 16
Subjects: Geomagnetism -- United States
Notes: At head of title: Terrestrial magnetism.