3
Published 1751
Uni Basel: Volltext
eBook
7
by Helms, Anton Zacharias
Published 1807
Uni Basel: Volltext
eBook
8
by Helms, Anton Zacharias
Published 1807
Uni Basel: Volltext
eBook
9
by Humboldt Alexander von
Published 1811
Book
10
by Humboldt Alexandre de
Published 1811
Book
11
Book
15
by Humboldt, Alexander ¬von
Published 1822
Book
17