Observations upon the export trade of tin and copper to India, with reference to the expected renewal of the honorable East India Company's charter and also upon the present state of the tin trade with Europe and its colonies, Africa and America - Unwin, George ([s.n.], 1811)
Also filmed as item no. 20268.14. - Goldsmiths'-Kress no. 20007.16. - OCLC, 18510941. - Reproduction of original from Kress Library of Business and Economics, Harvard University. - With: Correspondence of George Unwin, Esq. &c. &c. : with a view of opening a market for Cornish tin and copper in Persia. Truro : Flindell, printer, 1810