The schoolmaster's assistant [electronic resource] : being a complete system of practical arithmetic / by Thomas Dilworth ; carefull revised and amended. To which is added, A compendious system of practical gauging, containing all the rules, fully exemplified, necessary to a perfect practical knowledge of this useful art / by Robert Patterson.
- Philadelphia : Printed and sold by John Bioren, 1812.
211 p. : port.
- 3rd ed.
- Early American imprints. Second series ; no. 25270.
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