Ramsay, H., & Dix, E. R. M. (1835). The concise calculator: Containing arithmetical excellencies adapted to the various calculations incidental to public offices ... a few hints on the measurement of small plots of ground ... and a method of finding the weight of cattle, sheep and swine. pr. by Joseph Smyth.

Ramsay, Henry, and E. R. McC Dix. The Concise Calculator: Containing Arithmetical Excellencies Adapted to the Various Calculations Incidental to Public Offices ... a Few Hints on the Measurement of Small Plots of Ground ... and a Method of Finding the Weight of Cattle, Sheep and Swine. pr. by Joseph Smyth, 1835.