Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Bertram, Barbara; Gerth, Werner; Carl, Christine.- 1980. 45p.
Author(s): Gerth, Werner; Kasek, Leonhard; Ulrich, Gisela; Thiele, Gisela; Fischer, Evelyne; Ulbrich, Klaus.- 1987. 45p.
Author(s): Gerth, Werner.- 1970. 43p.