Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Gerth, Werner; Burkhardt, Erwin; Bernard, Günter; Bertram, Barbara; Bonus, Hans; Heinrichs, W.; Höpfner, E..- 1970. 62p.
Author(s): Gerth, Werner; Bertram, Barbara; Kaftan, Burkhard; Ronneberg, H..- 1975. 81p.
Author(s): Bertram, Barbara; Gerth, Werner; Carl, Christine.- 1980. 45p.