The schoolmaster's assistant: being a compendium of arithmetic, both practical and theoretical. In five parts. ... To which is prefixed, an essay on the education of youth; ... The twenty-first edition. By Thomas Dilworth, ...
Dilworth, Thomas,-1780.
London : printed and sold by Richard and Henry Causton (successors to the late Mr. Henry Kent),
1791.
Reproduction of original from the Harvard University Graduate School of Education Gutman.
ESTC