1
Published 1848
Book
3
5
Published 1869
Zettel
Volltext
eBook
6
Published 1870
Book
7
Published 1875
Book
8
Published 1875
Book
9
Published 1882
Book
10
Published 1886
Zettel
Book
11
Published 1893
Book
12
Published 1894
Book
18
Published 1909
Book
20
Published 1916
Zettel
Book