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Archive of 1949 Online Issues:

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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