08/1977-02/1983
08/1977-08/1984
08/1977-04/1981
12/1979-08/1984
08/1980-04/1981
12/1979-04/1981
04/1979-08/1984
04/1981-08/1984
04/1981-02/1983
08/1977-04/1982
(8104- )BU20,30,31,32,RU2#,30..5F