Key to the National arithmetic
Subtitle: containing full solutions to nearly all the problems
By: designed for the use of teachers and private students by John Herbert Sangster.
Contributors: Sangster, John Herbert, 1831-1904.
Publisher: J. Lovell; R. & A. Miller
Published: 1861
Place of publication: Montreal; Toronto
Language: eng
Number of pages: 292
Subjects: Arithmetic