The strong dry wind carying the sands of the ancient bed of the Huanghe River in Guanxian and Shenxian counties of Shandong Province has brought disaster to crops and people for centuries. By 1982,...
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The strong dry wind carying the sands of the ancient bed of the Huanghe River in Guanxian and Shenxian counties of Shandong Province has brought disaster to crops and people for centuries. By 1982,...