1987
January January 1987 79 (1): 1 - 313	March March 1987 79 (2): 315 - 662
May May 1987 80 (1): 1 - 347	July July 1987 80 (2): 355 - 661
September September 1987 81 (1): 1 - 294	November November 1987 81 (2): 295 - 641