12/1979-04/1981
08/1977-08/1984
08/1980-08/1984
08/1977-04/1981
04/1979-08/1984
08/1977-02/1983
03/1978-02/1983
(7708-7904)BU30,RU30 ; (7904- )BU3#,40,HU30,4