1942–1978326 issues
ST#V21N01 (1970-January)#V21N01 (1970-January)
- ST#V20N02 (1970-February)
#V20N02 (1970-February)
- ST#V21N04 (1970-March)
#V21N04 (1970-March)
- ST#V21N05 (1970-April)
#V21N05 (1970-April)
- ST#V21N06 (1970-May)
#V21N06 (1970-May)
- ST#V21N07 (1970-July)
#V21N07 (1970-July)
- ST#V21N08 (1970-August)
#V21N08 (1970-August)
- ST#V21N09 (1970-September)
#V21N09 (1970-September)
- ST#V21N10 (1970-October)
#V21N10 (1970-October)
- ST#V21N11 (1970-November)
#V21N11 (1970-November)
- ST#V21N12 (1970-December)
#V21N12 (1970-December)