1972
January January ; 19 (1) : 1 - 110	March March ; 19 (2) : 113 - 216	May May ; 19 (3) : 217 - 334
July July ; 19 (4) : 335 - 460	September September ; 19 (5) : 461 - 598	November November ; 19 (6) : 599 - 706