The last glacial period is divided into two stadial stages with an interstadial stage.Evolution of lakes of the source area during the Quaternary went through three stages.
黄河源区的
可划分
3，
末次、倒
第二次、倒第三次，末次又可分2
阶。
退阶段的The last glacial period is divided into two stadial stages with an interstadial stage.Evolution of lakes of the source area during the Quaternary went through three stages.
黄河源区的可划分3，末次、倒第二次、倒第三次，末次又可分2阶。
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