REMOVE

1. Printed
2. Selenga River (Mongolia and …
3. Regis, Jean Baptiste, 1664-1 …
4. 康熙, Emperor of China, 1654-1 …

WHAT

1. General Maps (1)
2. Names, Geographical (1)

WHERE

1. Mongolia (1)
2. Russia (1)
3. Selenga River (Mongolia a … (1)

WHO

1. Fuchs, Walter, 1902-1979 (1)
2. Jartoux, Pierre, 1669-172 … (1)
3. Regis, Jean Baptiste, 166 … (1)
4. 康熙, Emperor of China, 165 … (1)

WHEN

1. 1721 (1)