Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Gerth, Werner.- 1980. 11p.
Author(s): Gerth, Werner; Bertram, Barbara; Kaftan, Burkhard; Ronneberg, H..- 1975. 81p.
Author(s): Gerth, Werner; Kaftan, Burkhard; Netzker, Wolfgang.- 1976. 80p.
Author(s): Gerth, Werner; Fischer, Evelyne.- 1984. 26p.