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Why Was Silcrete Heat-Treated in the Middle Stone Age? An Early Transformative Technology in the Context of Raw Material Use at Mertenhof Rock Shelter, South Africa

Table 3

Frequency of heat treatment proxies on the silcrete artefacts by industrial (sub)grouping relative to raw material proportions for main rock types.

Table 3

doi: https://doi.org/10.1371/journal.pone.0149243.t003