Long-range forecast of geomagnetic activity: 1970-73
By: R.H. Olson.
Contributors: Space Disturbances Laboratory.
Series: ESSA technical report -- ERL-SDL 13
Published: 1969
Place of publication: Boulder, Colo
Language: eng
Number of pages: 12
Subjects: Solar activity.; Solar cycle.; Sunspots.; Geomagnetism.
Notes: Bibliography: p. 11-12.