The art of numbring by speaking rods, vulgarly termed Nepeirs bones : by which the most difficult parts of arithmetick, as multiplication, division, and extracting roots both square and cube, are performed with incredible celerity and exactness (without any charge to the memory) by addition and subtraction only.
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| Format: | eBook |
| Language: | English |
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London :
Printed by T.B. for H. Sawbridge ...,
1685.
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| Series: | Early English books online.
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| Online Access: | Connect to the full text of this electronic book |