1980
January/February 1980; 42 (1): 1 - 230	March/April 1980; 42 (2): 237 - 296	May/June 1980; 42 (3): 307 - 376
July/August 1980; 42 (4): 385 - 447	September/October 1980; 42 (5): 463 - 520	November/December 1980; 42 (6): 529 - 585