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Books about Rugua:
Chau Rugua: His work on the Chinese and Arab trade in the twelfth and thirteenth centuries, entitled Zhufanji by Rugua Zhao (1967)
Chau Rugua,: His work on the Chinese and Arab trade in the twelfth and thirteenth centuries, entitled Zhufan-chiÌ... by Rugua Zhao (1911)
Wiki information Rugua:
Zhao Rugua was a customs inspector at the city of Quanzhou during the late Song dynasty who wrote a two-volume book called Zhufan Zhi, literally "Description of the Barbarous Peoples" or "Records of Foreign Peoples", "Gazetteer of Foreigners" around...