1980
January January; 33 (1): 1 - 78	February February; 33 (2): 79 - 148	March March; 33 (3): 149 - 212
April April; 33 (4): 213 - 278	May May; 33 (5): 279 - 351	June June; 33 (6): 353 - 431
July July; 33 (7): 433 - 516	August August; 33 (8): 517 - 601	September September; 33 (9): 603 - 671
October October; 33 (10): 673 - 756	November November; 33 (11): 757 - 852	December December; 33 (12): 853 - 942