Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Gerth, Werner; Bertram, Barbara.- 1968. 68p.
Author(s): Bertram, Barbara; Gerth, Werner; Carl, Christine.- 1980. 45p.
Author(s): Kaftan, Burkhard; Gerth, Werner; Bertram, Barbara; Ronneberg, Heinz; Kaftan, Burkhard; Netzker, Wolfgang; Fischer, Axel.- 1977. 100p.
Author(s): Bertram, Barbara.- 1969. 81p.