Title: Wu Songdi Zhongguo jin dai jing ji di li yu jiu hai guan zi liao yan jiu ji
Subjects: Economic conditions, Customs administration, History, Conditions économiques, Douanes, Histoire, Economic history
Places: China, Chine
Time periods: 19th century, 1912-1949, 20th century, 19e siècle, 20e siècle