08/1977-02/1983
08/1977-08/1984
12/1979-08/1984
04/1979-08/1984
04/1981-08/1984
04/1981-02/1983
02/1983-08/1984
(8104- )GHI ; (8104- )BU20,RU20,30..T3..WT