08/1977-08/1984
04/1981-08/1984
08/1977-02/1983
04/1981-02/1983
04/1981-11/1984
08/1977-04/1981
(8308-8408)RU25 (7708-8008)BU2#,30,JU20,RU2#,30 ; (8008-8104)BU2