REMOVE

1. Korea
2. Philippines
3. Taiwan
4. Vietnam
5. Hainan Island (China)
6. Southeast Asia

WHAT

1. Borneo -- Maps (1)
2. China -- Maps (1)
3. Manuscripts (1)
4. Philippines -- Maps (1)
5. Sea Charts (1)

Less

WHERE

1. Borneo (1)
2. Cambodia (1)
3. Celebes Sea (1)
4. China (1)
5. China Sea (1)

More 

WHO

1. Blaeu, Joan, 1596-1673, c … (1)

WHEN

1. 1666 (1)