"Great Britain." . . "1800 - 1899" . . . . . . . . "Decimal coins, weights & measures"@en . "Decimal coins, weights & measures" . . . . . . . . . . . . . . . "Observations on the current coinage of Great Britain, as the medium of barter, calculation, and accounts : and on Professor de Morgan's plan for its more convenient and scientific arrangement, on the decimal system, with the advantages that would result from it, exemplified : reprinted from the \"Bankers' magazine,\" and dedicated to the Lords of the Treasury"@en . . . "Observations on the current coinage of Great Britain, as the medium of barter, calculation, and accounts : and on Professor De Morgan's plan for its more convenient and scientific arrangement, on the decimal system, with the advantages that would result from it, exemplified"@en . "History" . "Observations on the current coinage of Great Britain, as the medium of barter, calculation, and accounts and on Professor de Morgan's plan for its more convenient and scientific arrangement, on the decimal system, with the advantages that would result from it, exemplified" . "Observations on the current coinage of Great Britain, as the medium of barter, calculation, and accounts and on Professor de Morgan's plan for its more convenient and scientific arrangement, on the decimal system, with the advantages that would result from it, exemplified"@en . . "Electronic books" . . . . .