1958
January January; 18 (1): 1 - 120	February February; 18 (2): 121 - 234	March March; 18 (3): 235 - 336
April April; 18 (4): 337 - 424	May May; 18 (5): 425 - 558	June June; 18 (6): 559 - 678
July July; 18 (7): 679 - 812	August August; 18 (8): 813 - 916	September September; 18 (9): 917 - 1042
October October; 18 (10): 1043 - 1146	November November; 18 (11): 1147 - 1314	December December; 18 (12): 1315 - 1481