REMOVE

1. Population
2. Jungk, G.
3. DeFerrer

WHAT

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

WHERE

1. Belgium (1)
2. Germany (1)
3. Netherlands (1)
4. Switzerland (1)

WHO

1. Bar, J.C. (1)
2. Berghaus, H. (1)
3. Edler (1)
4. Justus Perthes (1)
5. Stieler, Adolf (1)

WHEN

1. 1850 (1)
2. 1851 (1)