1981
January January 1981; 3 (1): 5 - 92	March March 1981; 3 (2): 5 - 96
May May 1981; 3 (3): 5 - 107	July July 1981; 3 (4): 5 - 95
September September 1981; 3 (5): 5 - 104	November November 1981; 3 (6): 5 - 87