REMOVE

1. Printed
2. Names, Geographical
3. Ussuri River Valley (Russia …
4. Russia
5. Heilongjiang Sheng (China) …

WHAT

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

WHERE

1. Heilongjiang Sheng (China … (1)
2. Ussuri River Valley (Russ … (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)