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此书为童豪富继沈积论(Treatise on Sedimentation,1925)后之一大著作。沈积学在二十世纪初叶始渐起而为地质学中新支,近十来进步
This book is a major work after Treatise on Sedimentation (1925). Sedimentology began in the early twentieth century as a new branch in geology, nearly ten years to progress