论文部分内容阅读
It is well-known that a fairly large tract of country of Sikang (ChineseTibet) is occupied by various kinds of metamorphic rocks; but our knowledgeof their nature and origin is as yet far from complete. In thi8 connexion, the
It is well-known that a fairly large tract of the country of Sikang (ChineseTibet) is occupied by various kinds of metamorphic rocks; but our knowledgeof their nature and origin is as yet far from complete. In thi8 connexion, the