1977
January January; 44 (1): 1 - 221	February February; 44 (2): 231 - 423	March March; 44 (3): 433 - 606
April April; 44 (4): 609 - 806	May May; 44 (5): 809 - 1017	June June; 44 (6): 1023 - 1225
July July; 45 (1): 1 - 176	August August; 45 (2): 191 - 370	September September; 45 (3): 377 - 608
October October; 45 (4): 617 - 860	November November; 45 (5): 893 - 1259	December December; 45 (6): 1137 - 1316