1977
January January; 17 (1): 1 - 101	February February; 17 (2): 1 - 303	March March; 17 (3): 205 - 282
April April; 18 (1): 3 - 137	May May; 18 (2): 141 - 239	June June; 18 (3): 245 - 359
July July; 19 (1): 1 - 91	August August; 19 (2): 95 - 202	September September; 19 (3): 205 - 319
October October; 20 (1): 1 - 136	November November; 20 (2): 137 - 283	December December; 20 (3): 289 - 386