1
by Gumz, Wilhelm
Published 1931
Springer Berlin Heidelberg

2
by Gumz, Wilhelm
Published 1953
Springer Berlin Heidelberg

3
by Gumz, Wilhelm
Published 1942
Springer Berlin Heidelberg

4
by Gumz, Wilhelm
Published 1952
Springer Berlin Heidelberg

5
by Gumz, Wilhelm, Kirsch, Helmut, Mackowsky, Marie-Therese
Published 1958
Springer Berlin Heidelberg

6
by Gumz, Wilhelm
Published 1962
Springer Berlin Heidelberg