1987
February February 1987; 19 (1): 2 - 80	April April 1987; 19 (2): 2 - 80
June June 1987; 19 (3): 2 - 80	August August 1987; 19 (4): 2 - 80
October October 1987; 19 (5): 2 - 80	December December 1987; 19 (6): 2 - 77