08/1977-02/1983
08/1977-08/1984
12/1979-08/1984
04/1979-08/1984
04/1981-08/1984
04/1981-02/1983
08/1977-04/1982
(7708-8408)RU20..T3 ; (7708-8408)BU20,HU30,JU20,