REMOVE

1. Justus Perthus
2. Bar, I.C.
3. Thiel
4. Reichard, C.G.

WHAT

1. Atlas Map (1)
2. World Atlas (1)

WHERE

1. Austria (1)
2. Baltic Countries (1)
3. Eastern-Central Europe (1)
4. Poland (1)
5. Russia (1)

WHO

1. Bar, I.C. (1)
2. Berghaus, H. (1)
3. Hubbe, H. (1)
4. Reichard, C.G. (1)

WHEN

1. 1833 (1)
2. 1837 (1)