HAN DYNASTY TOPOGRAPHIC MAP. DATE: Before 168 B.C. MATERIAL: Ink on silk. DIMENSIONS: 3 feet by 3 feet. FOUND: Hunan, China. In 168 B.C., a lacquer box containing three maps drawn on silk was placed ...
After the 1975 earthquake, there was a greater emphasis on monitoring the motion of the south flank. Hawaiian Volcano ...
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