REMOVE

1. Poland
2. Justus Perthus
3. Reichard, C.G.
4. 1837

WHAT

1. Atlas Map (3)
2. World Atlas (3)

WHERE

1. Austria (1)
2. Baltic Countries (1)
3. Eastern-Central Europe (1)
4. Germany (1)

WHO

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

WHEN

1. 1833 (2)
2. 1831 (1)