1942–1984404 issues
SI#V31N02 (1975-January)#V31N02 (1975-January)
- SI#V31N03 (1975-March)
#V31N03 (1975-March)
- SI#V31N04 (1975-April)
#V31N04 (1975-April)
- SI#V31N05 (1975-May)
#V31N05 (1975-May)
- SI#V31N06 (1975-July)
#V31N06 (1975-July)
- SI#V31N07 (1975-August)
#V31N07 (1975-August)
- SI#V31N08 (1975-September)
#V31N08 (1975-September)
- SI#V31N09 (1975-October)
#V31N09 (1975-October)
- SI#V31N10 (1975-November)
#V31N10 (1975-November)
- SI#V32N01 (1975-December)
#V32N01 (1975-December)