pedernal

pedernal

A kind of hard, rock with a glassy opaque appearance. It was a favorite raw material for many prehistoric humans for the manufacture of tools such as knives and scraping implements.

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Loại từ: noun
Từ đồng nghĩa:
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Ngành nghề/Lĩnh vực: Anthropology
Category: Physical anthropology
Company: Palomar College
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Anthropology; Physical anthropology

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