American Journal of Epidemiology

1949
January January; 49 (1): 1 - 126	March March; 49 (2): 127 - 245
May May; 49 (3): 247 - 384	July July; 50 (1): 1 - 141
September September; 50 (2): 143 - 262	November November; 50 (3): 263 - 370

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