Anni 1969 – 1970- 1971 – 1972 – 1973 1969-01 1969-02 1969-03 1970-01 1970-02 1970-03 1970-04 1971-01 1971-02 1971-03 1972-01 1972-02 1972-03 1972-04 1973-01 1973-02 1973-03