1969
January January; 29 (1): 1 - 270	February February; 29 (2): 271 - 496	March March; 29 (3): 497 - 736
April April; 29 (4): 737 - 976	May May; 29 (5): 977 - 1160	June June; 29 (6): 1161 - 1317
July July; 29 (7): 1319 - 1466	August August; 29 (8): 1467 - 1613	September September; 29 (9): 1615 - 1748
October October; 29 (10): 1749 - 1893	November November; 29 (11): 1895 - 2136	December December; 29 (12): 2137 - 2491