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.
Leybourn, William,1626-1716.
London : printed for G. Sawbridge, and are to be sold at his house on Clerkenwell-Green,
1667.
W.L. = William Leybourn.
Attributed to William Leybourn by Wing.
Title page is A2.
Wing (CD-ROM, 1996)
ESTC
Microfilm.
Quadrant
Mathematics
Mathematical instruments
Great Britain England London.