1980
January January 1; 77 (1) : 1 - 689	February February 1; 77 (2) : 691 - 1229	March March 1; 77 (3) : 1231 - 1721
April April 1; 77 (4) : 1723 - 2353	May May 1; 77 (5) : 2355 - 3070	June June 1; 77 (6) : 3071 - 3748
July July 1; 77 (7) : 3749 - 4390	August August 1; 77 (8) : 4391 - 5024	September September 1; 77 (9) : 5025 - 5574
October October 1; 77 (10) : 5575 - 6254	November November 1; 77 (11) : 6255 - 6941	December December 1; 77 (12) : 6943 - 7630