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A new and most useful instrument for addition and subtraction of pounds, shillings, pence, and farthings; without charging the memory, disturbing the mind, or exposing the operator to any uncertainty; : which no method hitherto published, can justly pretend to. : Invented and presented to His most Excellent Majesty Charles II. King of Great Britain, France, and Ireland, &c. 1666. /

Main Author: Morland, Samuel, Sir, 1625-1695.
Corporate Author: Early English Books Online.
Format: Online Book
Published: [London : s.n., 1672?]
Series:Early English books online.
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