1977
January/February 1977; 39 (1): 1 - 47	March/April 1977; 39 (2): 76 - 148	May/June 1977; 39 (3): 153 - 201
July/August 1977; 39 (4): 211 - 276	September/October 1977; 39 (5): 285 - 371	November/December 1977; 39 (6): 377 - 450