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VOLUME 50 (1989) | ISSUE 10 | PAGE 408
Variation in nuclear composition of primary cosmic rays in the energy range 1017-1019 eV
Distributions of the height of maximum development of extensive air showers constructed from measurements of Cerenkov light at the Yakutsk extensive-air-shower installation have been analyzed. The relative numbers of protons and nuclei among the primary particles with energies of 10171019 eV are estimated.