Decimal Tables Of Assay Reports, Showing The English Trade Report Equivalent To Any Decimal, And The Converse. To Which Is Added Tables Showing The ... Fine Gold Or Silver In The Cwt. And Ton [&c.]

الوصف

Decimal Tables Of Assay Reports, Showing The English Trade Report Equivalent To Any Decimal, And The Converse. To Which Is Added Tables Showing The ... Fine Gold Or Silver In The Cwt. And Ton [&c.]