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jan 1, 2000 BC - T’ing To-t’ung and Yu Shu
Description:
They described the process of chewing and swallowing
Added to timeline:
Dental History Timeline
By
Kaushal Patel
26 Jan 2018
0
0
821
Date:
jan 1, 2000 BC
Now
~ 4029 years ago
Images:
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