Cosmic-ray results:
Huancayo, Peru, January 1956-December 1959, Instituto Geofísico de Huancayo; Cheltenham, Maryland, January 1956-October 4, 1956, Fredericksburg, Virginia, October 5, 1956-December 1959, U.S. Coast and Geodetic Survey, Cheltenham Magnetic Observatory [and] Fredericksburg Magnetic Observatory; Christchurch, New Zealand, January 1956-June 1959, Department of Scientific and Industrial Research, Magnetic Survey Division; Godhavn, Greenland, January 1954-July 1959, det Danske meteorologiske institut, Geofysisk observatorium; Universidad Nacional de México, July 1957-December 1958, Instituto de Geofísica.
[By] Liselotte Beach [and] S.E. Forbush.

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