Rabdologiæ, seu numerationis per virgulas libri duo : cum appendice de expeditissimo multiplicationis promptuario. Quibus accessit & arithmeticæ localis liber unus (1617)
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Calculators · Mathematics · Mathematics -- Early works to 1800
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
![An illustration from Examen dv livre des Recreations mathematiqves, & de ses problemes en geometrie mechanique, optique & catoptrique [du J. Leurechon] Où sont aussi discutées & restabiles plusieurs experiences physiques y proposées (1639)](https://img.insideoutlibrary.com/img/200/ia-examendvlivredes00mydo-131-25.webp)
