Shanghai: Statistical Department of the Inspectorate General of Customs, 1909, 1910. Two volumes, 8.5x11 inches, several closed tears to spine panel appear to have been carefully re-glued, upper spine end of volume 1 somewhat bumped, otherwise very good. Vol. 1 is text, vol. 2 is the Key. Textbook for the jargon-laden texts to be encountered while on customs duty, in the very final years of the Qing dynasty.