by KRUGER H,DT
Year of Publication 13.02.1973

by SCHWENKE R,DT, HARDERS V,DT, FUHRMANN S,DT, KRUGER H,DT
Year of Publication 29.10.1974

by BADER E,DT, HASCHKE H,DT, KERSCHNER E,DT, KUZEL P,DT, HUFNAGEL A,DT, KRUGER H,DT
Year of Publication 10.12.1974