| Abstract: |
English summary on page 22 as follows: Basing themselves on the results from examining some types of lithic artifacts such as core, core - tools, flaks, retouched tools in Nguom collection, the authors present prliminary remarks about various stone-making techniques. At Nguom, the blade technique was not developed, Levallois flakes are, in fact, pseudo-levallois. The pebble "chipping" technique appeared in the earliest period of the site. The authors earried out some technical experiments in manufacturing pebble core tools, in flaking, especially flaking point flakes and in retouching flake tools. From the experiments, the authors made an attempt to draw out a process of anufacturing stone tools at Nguom.
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