Commissioners of National Education in Ireland & Commissioners of National Education in Ireland. (1865). A treatise on arithmetic in theory and practice: For the use of the Irish National Schools. Published by direction of the Commissioners of National Education in Ireland.

Commissioners of National Education in Ireland and Commissioners of National Education in Ireland. A Treatise on Arithmetic in Theory and Practice: For the Use of the Irish National Schools. Published by direction of the Commissioners of National Education in Ireland, 1865.