1975
January January; 79 (1): 7 - 141	February February; 79 (2): 143 - 347	March March; 79 (3): 349 - 550
April April; 79 (4): 551 - 691	May May; 80 (1): 1 - 226	June June; 80 (2): 227 - 399
July July; 80 (3): 401 - 650	August August; 80 (4): 651 - 819	September September; 81 (1): 9 - 222
October October; 81 (2): 223 - 413	November November; 81 (3): 415 - 594	December December; 81 (4): 595 - 802