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<正> In December 1980, two soil samples were collected from the upper and lower layers of Long-
THE MAXIMUM AGE OF HEXIAN MAN
【摘 要】
：
<正> In December 1980, two soil samples were collected from the upper and lower layers of Long-
【机 构】
：
InstituteofArchacology,ChineseAcademyofSocialSciences,Beijing,Beijing
【出 处】
：
科学通报：英文版
【发表日期】
：
1983年8期
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