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1988,1986年的。1996年引述于 R. D. Guthrie. The Mammoth Steppe and the origin of Mongoloid and their dispersal. In Prehistoric Mongoloid Dispersal. Oxford Science Publications 1996。9 P* ]8 `% u# F8 {" e p9 U
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原文有 “as a general figure”的前提,当然非洲人肯定不都是这样的。 9 {5 a# Y" b' C0 j2 Y : }) f& i# B7 C$ u* s4 ^* OGuthrie 引述的是:Harrison, G.A. et al., Human Biology, Princeton Univ. Press, 1988 J: \& \8 L/ @$ R1 Y" O # V) v5 d- H0 V( l4 i
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