A key to the Western calculator
Subtitle: containing the solution of all the examples and questions for exercise ... To which is added, some useful rules, designed chiefly to facilitate the labour of teachers; and assist such as have not the opportunity of a tutor's aid
By: By John Armstrong
Contributors: Stockton, Joseph, 1779-1832
Edition: 3d. ed., rev. and corr.
Publisher: Printed and published by Johnston & Stockton
Published: 1831
Place of publication: Pittsburgh
Language: eng
Number of pages: 139
Subjects: Early works to 1900; Arithmetic
Notes: Mode of access: Internet.

MiU copy imperfect: p. 49-56 lacking.