The study of Bullion from the Tang and Song Dynasty written by a Japanese author sixty or seventy years ago is a very important work on the study of Chinese numismatic history.
日本加藤繁先生六七十年前所著《唐宋时代金银之研究》，是中国货币史研究方面的一部重要著作。
Song Shi(History of Song Dynasty) which contains abundant scientific and technical knowledge, is an important raw material for the study of the history of science and technology in the Song Dynasty.
《宋史》中包含着丰富的科学技术知识，是研究宋代科学技术史重要的原始资料。
The poetic history of Late Song Dynasty is the most important in the study of poetic history of the ancient literary.
研究古代文学中的“诗史”问题，宋季诗史是最重要的对象。
The poetic history of Late Song Dynasty is the most important in the study of poetic history of the ancient literary.
研究古代文学中的“诗史”问题，宋季诗史是最重要的对象。
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