1970
January January ; 17 (1) : 1 - 96	March March ; 17 (2) : 97 - 198	May May ; 17 (3) : 199a - 292
July July ; 17 (4) : 293 - 434	September September ; 17 (5) : 435 - 550	November November ; 17 (6) : 551 - 669