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• Text
  EEBO-TCP
  
  The art of numbring by speaking-rods, vulgarly termed Nepeirs bones by which the most difficult parts of arithmetick, as multiplication, division, and extracting of roots both square and cube, are performed with incredible celerity and exactness (without any charge to the memory) by addition and subtraction only / published by W.L.
  Date of publication:
  1667
  

  Author(s):

  Leybourn, William, 1626-1716.
  Description:
  Attributed to William Leybourn. Cf. BM. An enlarged edition was published in 1721 under title: The description and use of ... Gunter's quadrant ... to which is added the use of Nepiar's bones. Folded table inserted. ...
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