THE 400-kilometer Qingjiang River, second tributary of the Yangtze River in Hubei Province, has a drainage area of 17.000 square kilometers. Its advantageous natural conditions have made it a key...
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THE 400-kilometer Qingjiang River, second tributary of the Yangtze River in Hubei Province, has a drainage area of 17.000 square kilometers. Its advantageous natural conditions have made it a key...