1977
January January ; 24 (1) : 1 - 152	March March ; 24 (2) : 153 - 292	May May ; 24 (3) : 293 - 424
July July ; 24 (4) : 425 - 532	September September ; 24 (5) : 533 - 630	November November ; 24 (6) : 631 - 745