The British negotiator : or, foreign exchanges made perfectly easy. Containing tables for all the various courses of exchange, ... The weights and measures of foreign nations. Several mercantile tables, ... And an essay on the nature and business of exchanging in general, ... The fifth edition, corrected and much enlarged. By S. Thomas, merchant. - Slack, Thomas, (printed for G. G. J. and J. Robinson; and S. Hodgson, Newcastle,, 1791)