1980
January January; 70 (1): 1 - 63	February February; 70 (2): 65 - 113	March March; 70 (3): 117 - 157
April April; 70 (4): 161 - 206	May May; 70 (5): 215 - 258	June June; 70 (6): 265 - 307
July July; 70 (7): 318 - 378	August August; 70 (8): 385 - 441	September September; 70 (9): 445 - 482
October October; 70 (10): 493 - 534	November November; 70 (11): 539 - 590	December December; 70 (12): 597 - 636