1980
January January; 106 (1): 1 - 414	February February; 106 (2): 425 - 642	March March; 106 (3): 649 - 1039
April April; 106 (4): 1047 - 1316	May May; 106 (5): 1323 - 1654	June June; 106 (6): 1659 - 2018
July July; 107 (1): 1 - 358	August August; 107 (2): 375 - 632	September September; 107 (3): 641 - 853
October October; 107 (4): 863 - 1265	November November; 107 (5): 1273 - 1655	December December; 107 (6): 1663 - 2134