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Archive of 1950 Online Issues:

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January
January; 51 (1): 1 - 133

March
March; 51 (2): 135 - 263

May
May; 51 (3): 265 - 395

July
July; 52 (1): 1 - 132

September
September; 52 (2): 133 - 250

November
November; 52 (3): 251 - 370