1980
January January; 29 (1): 1 - 187	February February; 29 (2): 195 - 346	March March; 29 (3): 351 - 548
April April; 30 (1): 1 - 204	May May; 30 (2): 209 - 365	June June; 30 (3): 369 - 535
July July; 31 (1): 1 - 157	August August; 31 (2): 161 - 297	September September; 31 (3): 301 - 440
October October; 32 (1): 3 - 651	November November; 32 (2): 677 - 868	December December; 32 (3): 873 - 1049