The schoolmasters assistant: being a compendium of arithmetic, both practical and theoretical. In four parts. ... To which is prefixt, an essay on the education of youth; ... The sixth edition. By Thomas Dilworth, ...
Dilworth, Thomas,-1780.
London : printed and sold by Henry Kent,
1752.
ESTC
Also reproduced on microfilm. Woodbridge, CT: Research Publications, Inc., 1986. The Eighteenth Century ; reel 5627, no. 3.