Eighteen plates introduction: This was the path that Mr. Cheng Yuqi walked when he investigated the geology of Fangshan from 1947 to 1948. His research on Fangshan volcano is a classic chapter in the history of ancient volcano research in China.
Eighteen plates introduction: This was the path that Mr. Cheng Yuqi walked when he investigated the geology of Fangshan from 1947 to 1948. His research on Fangshan volcano is a classic chapter in the history of ancient volcano research in China.