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- [22] THE ALTITUDE AND ANGULAR DEPENDENCE OF COSMIC-RAY AIR SHOWERS PHYSICAL REVIEW, 1954, 93 (06): : 1362 - 1366
- [23] IONIZATION CHAMBER MEASUREMENTS ON COSMIC-RAY AIR SHOWERS PHYSICAL REVIEW, 1946, 70 (9-10): : 792 - 792
- [25] PENETRATING PARTICLES IN EXTENSIVE COSMIC-RAY AIR SHOWERS PHYSICAL REVIEW, 1949, 75 (07): : 1063 - 1071
- [26] Coincidence counter studies of the variation of intensities of cosmic-ray showers and vertical rays with barometric pressure PHYSICAL REVIEW, 1935, 47 (08): : 578 - 580