Mathematics & AstronomyA mental arithmeticG. P. Quackenbos![A mental arithmetic]()
A mental arithmetic
G. P. Quackenbos
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“A mental arithmetic” by G. P. Quackenbos: a public-domain book in “Mathematics & Astronomy”, written in English. Read it in full and free at its original…
Catalogue details
- Author
- G. P. Quackenbos
- Category
- Mathematics & Astronomy
- Language
- English
- Source
- HathiTrust