Cosmic-ray results:/
Huancayo, Peru, January 1946-December 1955, Instituto Geofísico de Huancayo; Cheltenham, Maryland March 1936-December 1955, U.S. Coast and Geodetic Survey, Cheltenham Magnetic Observatory; Christ-church, New Zealand, January 1947-December 1955, Department of Scientific and Industrial Research, Magnetic Survey Division; Godhavn, Greenland, January 1947-Decmeber 1950, det Danske Meteorologiske institut, Geofysisk observatorium.,
[By] Isabelle Lange [and] S. E. Forbush.

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