Terrestrial magnestism.
Subtitle: 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, assistant chief, Division of terrestrial magnestism ...
Contributors: Hazard, Daniel L. b. 1865.
Edition: [2d ed.]
Series: Special publication; no. 33
Publisher: Govt. print. off.
Published: 1920
Place of publication: Washington
Language: eng
Number of pages: 16
Subjects: Geomagnetism -- United States.
Notes: At head of title:  Serial no. 126.  Department of commerce.  U.S. Coast and geodetic survey.  E. Lester Jones, superintendent.
Running title:  Distribution of magnetic declination.