1947
January January; 20 (229): 1 - 44	February February; 20 (230): 45 - 84	March March; 20 (231): 85 - 128
April April; 20 (232): 129 - 176	May May; 20 (233): 177 - 220	June June; 20 (234): 221 - 260
July July; 20 (235): 261 - 300	August August; 20 (236): 301 - 344	September September; 20 (237): 345 - 392
October October; 20 (238): 393 - 440	November November; 20 (239): 441 - 488	December December; 20 (240): 489 - 540