John Herbert Sangster

Key to the National Arithmetic John Herbert Sangster

Key to the National arithmetic containing full solutions to nearly all the problems. Designed for the use of teachers and private students. This book, "Key to the National arithmetic", by John Herbert Sangster, is a replication of a book originally published before 1864. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.