REMOVE

1. Sea Charts
2. Pearl River Estuary (China) …
3. Guangdong Sheng (China)
4. Shangchuan Island

WHAT

1. Coasts (1)
2. Manuscripts (1)
3. Waterways (1)

WHERE

1. Guangdong Sheng (China) (1)
2. Luzon (Philippines) (1)
3. Pearl River Estuary (Chin … (1)

WHO

1. Anonymous (1)

WHEN

1. 17--? (1)