REMOVE

1. China -- Maps
2. Sea Charts
3. Manuscripts
4. China
5. China Sea
6. Hainan Island (China)

WHAT

1. Borneo -- Maps (1)
2. China Sea -- Maps (1)

More 

WHERE

1. Borneo (1)
2. Cambodia (1)
3. Celebes Sea (1)
4. Hainan Island (China) (2)
5. Japan (1)
6. Korea (1)
7. Malaysia (1)
8. Paracel Islands (2)
9. Philippines (2)
10. Southeast Asia (1)
11. Taiwan (2)
12. Thailand (1)
13. Vietnam (2)

WHO

1. Blaeu, Joan, 1596-1673, c … (1)
2. Blaeu, Joan, 1650-1712, c … (1)

WHEN

1. 1666 (1)
2. 1677 (1)