1973
January January 1973; 52 (1): 3 - 188	March March 1973; 52 (2): 195 - 399
May May 1973; 52 (3): 403 - 638	July July 1973; 52 (4): 643 - 847
September September 1973; 52 (5): 852 - 1757	November November 1973; 52 (6): 1167 - 1347