REMOVE

1. Philippines -- Maps
2. Sea Charts
3. Manuscripts
4. Paracel Islands
5. Borneo
6. Vietnam

WHAT

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

WHERE

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

More 

WHO

1. Blaeu, Joan, 1596-1673, c … (1)

WHEN

1. 1666 (1)