![](/images/qiufo/100.jpg)
![](/images/qiufo/155.jpg)
![](/images/qiufo/304.jpg)
![](/images/qiufo/117.jpg)
![](/images/qiufo/202.jpg)
![](/images/qiufo/252.jpg)
![](/images/qiufo/117.jpg)
![](/images/qiufo/162.jpg)
![](/images/qiufo/279.jpg)
![](/images/qiufo/42.jpg)
![](/images/qiufo/214.jpg)
![](/images/qiufo/256.jpg)
![](/images/qiufo/108.jpg)
![](/images/qiufo/164.jpg)
![](/images/qiufo/345.jpg)
![](/images/qiufo/48.jpg)
![](/images/qiufo/237.jpg)
![](/images/qiufo/305.jpg)
![](/images/qiufo/11.jpg)
![](/images/qiufo/136.jpg)
![](/images/qiufo/251.jpg)
![](/images/qiufo/115.jpg)
![](/images/qiufo/172.jpg)
![](/images/qiufo/294.jpg)
![](/images/qiufo/30.jpg)
![](/images/qiufo/157.jpg)
![](/images/qiufo/317.jpg)
![](/images/qiufo/19.jpg)
![](/images/qiufo/174.jpg)
![](/images/qiufo/280.jpg)
![](/images/qiufo/96.jpg)
![](/images/qiufo/205.jpg)
![](/images/qiufo/344.jpg)
![](/images/qiufo/9.jpg)
![](/images/qiufo/203.jpg)
![](/images/qiufo/340.jpg)
![](/images/qiufo/93.jpg)
![](/images/qiufo/224.jpg)
![](/images/qiufo/246.jpg)
![](/images/qiufo/21.jpg)
![](/images/qiufo/207.jpg)
![](/images/qiufo/273.jpg)
(PPT) Swot шинжилгээ | tamiraa j
Archaeological evidence demonstrates a drilling technique for making fire had been used by nomadic people in Inner Asia from the Early Iron Age (i.e. Pazyryk period of 5th–4th centuries B.C.) through the Late Iron Age (i.e. Xiongnu) and Medival periods. In this article, the author compares some ancient artifacts related to drilling techniques ...
![](/image/whatsappp.png)
![](/images/qiufo/104.jpg)
![](/images/qiufo/122.jpg)
![](/images/qiufo/358.jpg)
![](/images/qiufo/20.jpg)
![](/images/qiufo/192.jpg)
![](/images/qiufo/281.jpg)
![](/images/qiufo/106.jpg)
![](/images/qiufo/184.jpg)
![](/images/qiufo/345.jpg)
![](/images/qiufo/29.jpg)
![](/images/qiufo/172.jpg)
![](/images/qiufo/283.jpg)
![](/images/qiufo/120.jpg)
![](/images/qiufo/130.jpg)
![](/images/qiufo/305.jpg)
![](/images/qiufo/84.jpg)
![](/images/qiufo/203.jpg)
![](/images/qiufo/244.jpg)
![](/images/qiufo/7.jpg)
![](/images/qiufo/226.jpg)
![](/images/qiufo/336.jpg)
![](/images/qiufo/89.jpg)
![](/images/qiufo/228.jpg)
![](/images/qiufo/294.jpg)
![](/images/qiufo/53.jpg)
![](/images/qiufo/204.jpg)
![](/images/qiufo/327.jpg)
![](/images/qiufo/116.jpg)
![](/images/qiufo/203.jpg)
![](/images/qiufo/296.jpg)
![](/images/qiufo/22.jpg)
![](/images/qiufo/155.jpg)
![](/images/qiufo/295.jpg)
![](/images/qiufo/78.jpg)
![](/images/qiufo/195.jpg)
![](/images/qiufo/241.jpg)
![](/images/qiufo/98.jpg)
![](/images/qiufo/193.jpg)
![](/images/qiufo/315.jpg)
![](/images/qiufo/31.jpg)
![](/images/qiufo/133.jpg)
![](/images/qiufo/345.jpg)
![](/images/qiufo/81.jpg)
![](/images/qiufo/159.jpg)
![](/images/qiufo/348.jpg)