REMOVE

1. China
2. South China Sea
3. Hainan Sheng (China)
4. Korea
5. [ca. 1892]

WHAT

1. Bonvalot, Gabriel, 1853-1 … (1)
2. Discoveries in geography (1)
3. Printed (1)
4. Thematic Maps (1)

More 

WHERE

1. Bay of Bengal (1)
2. Hainan Sheng (China) (1)
3. India (1)
4. Mongolia (1)
5. Myanmar (1)
6. Philippines (1)
7. Taiwan (1)

WHO

1. Erhard Bros. (Firm), engr … (1)

WHEN

1. [ca. 1892] (1)