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1990
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January
January; 171 (1): 1 - 362 |
February
February; 171 (2): 363 - 588 |
March
March; 171 (3): 589 - 970 |
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April
April; 171 (4): 971 - 1386 |
May
May; 171 (5): 1387 - 1838 |
June
June; 171 (6): 1839 - 2182 |
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July
July; 172 (1): 1 - 406 |
August
August; 172 (2): 407 - 668 |
September
September; 172 (3): 669 - 1007 |
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October
October; 172 (4): 1008 - 1274 |
November
November; 172 (5): 1275 - 1532 |
December
December; 172 (6): 1533 - 1880 |
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