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Sumerian Mesopotamia civilization rice husk fossil
05-04
Quantum dot LEDs rice husk Backlighting OLED screen
05-01
![Calcium deficiency pseudo-scholars: the origin of Chinese civilization Sumerian? Look at China's agricultural technology 10,000 years ago[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)
