Directions for magnetic measurements
By: by Daniel L. Hazard, assistant chief, Division of terrestrial magnetism
Contributors: Hazard, Daniel L. (Daniel Lyman), 1865-1951
Edition: 2nd ed.
Series: Serial -- no. 166
Publisher: U.S. Govt. print off.
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 130
Subjects: Geomagnetism; Observers' manuals
Notes: At head of title: Department of commerce. Coast and geodetic survey. E.L. Jones, director ...

Bibliography: p. 5.