1
by Hager, Hermann
Published 1925
Springer Berlin Heidelberg

2
by Hager, Hermann
Published 1920
Springer Berlin Heidelberg

4
by Hager, Hermann
Published 1899
Springer Berlin Heidelberg

5
by Hager, Hermann
Published 1925
Springer Berlin Heidelberg

6
by Hager, Hermann
Published 1904
Springer Berlin Heidelberg

7
by Hager, Hermann
Published 1908
Springer Berlin Heidelberg

8
by Hager, Hermann
Published 1912
Springer Berlin Heidelberg