1980
January January; 94 (1): 1 - 234	February February; 94 (2): 235 - 522	March March; 94 (3): 519 - 808
April April; 94 (4): 809 - 1090	May May; 95 (1): 1 - 258	June June; 95 (2): 259 - 523
July July; 95 (3): 525 - 783	August August; 95 (4): 785 - 1058	September September; 96 (1): 1 - 313
October October; 96 (2): 315 - 563	November November; 96 (3): 561 - 778	December December; 96 (4): 779 - 1018