1977
January January; 28 (1): 1 - 188	February February; 28 (2): 33 - 192	March March; 28 (3): 65 - 196
April April; 28 (4): 97 - 200	May May; 28 (5): 129 - 204	June June; 28 (6): 161 - 208
July July; 29 (1): 1 - 212	August August; 29 (2): 33 - 216	September September; 29 (3): 65 - 120
October October; 29 (4): 97 - 128	November November; 29 (5): 129 - 188	December December; 29 (6): 189 - 212