Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Gerth, Werner; Bertram, Barbara.- 1969. 70p.
Author(s): Gerth, Werner; Ulbrich, Klaus.- 1982. 18p.
Author(s): Gerth, Werner; Burkhardt, Erwin; Bernard, Günter; Bertram, Barbara; Bonus, Hans; Heinrichs, W.; Höpfner, E..- 1970. 62p.
Author(s): Gerth, Werner; Bertram, Barbara.- 1968. 68p.