2
by Frahm, Peter, Hürlimann, Werner, Richter, Helmut, Schumny, Harald
Published 1983
Vieweg+Teubner Verlag

3
by Schumny, Harald
Published 1975
Vieweg+Teubner Verlag

8
by Schumny, Harald
Published 1976
Vieweg+Teubner Verlag