1987
January January; 120 (1): 1 - 431	February February; 120 (2): 439 - 843	March March; 120 (3): 849 - 1217
April April; 120 (4): 1225 - 1690	May May; 120 (5): 1695 - 2194	June June; 120 (6): 2205 - 2622
July July; 121 (1): 1 - 434	August August; 121 (2): 443 - 830	September September; 121 (3): 837 - 1200
October October; 121 (4): 1209 - 1582	November November; 121 (5): 1589 - 1912	December December; 121 (6): 1917 - 2262