Some summary geomagnetic activity data, 1932-1976
By: H. Meyers, J. H. Allen.
Contributors: Allen, J. H.; National Geophysical and Solar-Terrestrial Data Center.
Series: NGSDC data fact sheet -- no. 1
Publisher: National Geophysical and Solar-Terrestrial Data Center, NOAA/Environmental Data Service
Published: 1977
Place of publication: Boulder, Colo
Language: eng
Number of pages: 12
Subjects: Geomagnetism.
Notes: Cover title.

Bibliography: p. 12.