1981
January January 1981; 32 (1): 1 - 72	February February 1981; 32 (2): 73 - 144	March March 1981; 32 (3): 145 - 216
April April 1981; 32 (4): 217 - 289	May May 1981; 32 (5): 291 - 364	June June 1981; 32 (6): 365 - 436
July July 1981; 32 (7): 439 - 516	August August 1981; 32 (8): 517 - 588	September September 1981; 32 (9): 589 - 659
October October 1981; 32 (10): 663 - 732	November November 1981; 32 (11): 733 - 805	December December 1981; 32 (12): 807 - 860