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World-Wide Changes in Cosmic-Ray Intensity
Rev. Mod. Phys. 11, 168 – Published 1 July, 1939
DOI: https://doi.org/10.1103/RevModPhys.11.168
Rev. Mod. Phys. 11, 168 – Published 1 July, 1939
DOI: https://doi.org/10.1103/RevModPhys.11.168