1969
January January ; 16 (1) : 1 - 88	March March ; 16 (2) : 89 - 186	May May ; 16 (3) : 187 - 272
July July ; 16 (4) : 273 - 360	September September ; 16 (5) : 361 - 446	November November ; 16 (6) : 447 - 576