Russia, Mongolia, China : being some record of the relations between them from the beginning of the XVIIth century to the death of the Tsar Alexei Mikhailovich A.D. 1602-1676, rendered mainly in the form of narratives dictated or written by the envoys sent by the Russian Tsars, or their voevodas in Siberia to the Kalmuk and Mongol Khans & princes, and to the emperors of China with introductions, historical and geographical also a series of maps showing the progress of geographical knowledge in regard to northern Asia during the XVIth, XVIIth, & early XVIIIth centuries
以下为对购买帮助不大的评价