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| View Original: | Feng Rui's reprodution of Heng's sismoscope.JPG (320x184) | |||
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| Keywords: Feng Rui's reprodution of Heng's sismoscope.JPG en Feng Rui's reprodution of Heng's sismoscope 2015-09-30 http //scimonth blogspot it/2011/02/blog-post html å¼µè¡¡å °å‹•å„ ä¹‹è¬Žç ´è§£ other versions cc-zero Uploaded with UploadWizard Uncategorized 2015 September 30 | ||||
