A treatise of arithmetic in theory and practice : containing every thing important in the study of abstract and applicate numbers /

Author: Gough, John, 1721-1791.
Published 1788

A key to the American tutor's assistant revised : in which all the examples necessary for a learner are wrought at large, and also solutions given of all the questions for exercise...

Author: McKenney, Frederic.
Published 1809