1980
January January; 141 (1): 1 - 430	February February; 141 (2): 431 - 1003	March March; 141 (3): 1005 - 1478
April April; 142 (1): 1 - 369	May May; 142 (2): 371 - 734	June June; 142 (3): 735 - 1054
July July; 143 (1): 1 - 540	August August; 143 (2): 541 - 1094	September September; 143 (3): 1095 - 1541
October October; 144 (1): 1 - 480	November November; 144 (2): 481 - 858	December December; 144 (3): 859 - 1213