abandoned Huanghe River Delta
abandoned Yellow River delta
agricultural exploitation in Yellow River Delta
Ancient Yellow River delta
Ancient Yellow River-Yangtze River Delta
area of Yangtze River Delta
braid river delta deposit
braided river delta front
Changjiang River delta aera
Changjiang River delta plain
Changjiang Yangtze River delta
Changjiang(Yangtze) River delta
city clusters of the big Pearl river delta
Eastern Pearl River Delta
estuary of Yellow River delta