The Teachers' Assistant: Or a System of Practical Arithmetic ; Wherein the Several Rules of that Useful Science, are Illustrated by a Variety of Examples ; a Large Proportion of which Arae in Federal Money ; the Whole Designed to Abridge the Labour of Teachers ; and to Facilitate the Instruction of Your

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Published and sold by M'Carty & Davis, No. 171 Market Street, 1840 - Arithmetic - 198 pages

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