1966
January January ; 13 (1) : 1 - 80	March March ; 13 (2) : 81 - 232	May May ; 13 (3) : 233 - 322
July July ; 13 (4) : 323 - 414	September September ; 13 (5) : 415 - 540	November November ; 13 (6) : 541 - 638