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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。5 J, A2 F" Y* u/ q
& y7 f! t6 k& |4 t3 y0 f原文有 “as a general figure”的前提,当然非洲人肯定不都是这样的。0 \; U# a: W7 g, ?2 K6 D$ T4 l
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Guthrie 引述的是:Harrison, G.A. et al., Human Biology, Princeton Univ. Press, 1988
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