1948
January January; 55 (1): 1 - 137	February February; 55 (2): 139 - 286	March March; 55 (3): 287 - 449
April April; 55 (4): 451 - 580	May May; 55 (5): 581 - 767	June June; 55 (6): 769 - 872
July July; 56 (1): 1 - 141	August August; 56 (2): 143 - 258	September September; 56 (3): 259 - 377
October October; 56 (4): 379 - 508	November November; 56 (5): 509 - 697	December December; 56 (6): 699 - 834