1
2
Published 1895
“...Naturforscher-Verein <Riga>...”
Book
3
4
5
6
Published 1870
“...Naturforscher-Verein <Riga>...”
CD
7
Published 1870
“...Naturforscher-Verein <Riga>...”
Book
8
Published 1895
“...Naturforscher-Verein <Riga>...”
CD
9
10