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1981
January January; 15 (1): 3 - 78	February February; 15 (2): 90 - 136
March March; 15 (3): 166 - 216	April April; 15 (4): 248 - 300
May May; 15 (5): 325 - 390	July/August July/August; 15 (7/8): 522 - 607
September September; 15 (9): 633 - 699	October October; 15 (10): 732 - 810
November November; 15 (11): 838 - 910	December December; 15 (12): 932 - 1003