Annual mean values of geomagnetic elements since 1941
By: Marion P. Fisher.
Series: Geomagnetic bulletin ;; no. 6; Geomagnetic bulletins of the Institute of Geological Sciences ;; no. 6.
Publisher: H.M. Stationery Off.
Published: 1976
Place of publication: London
Language: eng
Number of pages: 170
Subjects: Geomagnetism -- Secular variations -- Tables.
Notes: Bibliography: p. 1.