A key to the western calculator
Subtitle: containing the solution of all the examples and questions for exercise, whith reference to the pages where they stand, 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.
Edition: Third edition, revised and corrected.
Publisher: Johnston & Stockton
Published: 1831
Place of publication: Pittsburgh
Language: eng
Number of pages: 139
Subjects: Stockton, J. -- 1779-1832.; Arithmetic -- Early works to 1900.