The whetstone of witte, whiche is the seconde parte of arithmetike: containyng thextraction of rootes: the cossike practise, with the rule of Equation: and the woorkes of surde nombers

Recorde, Robert, 1510?-1558 · 1557 · London : J. Kyngstone · 8 pictures

Algebra · Arithmetic

Internet Archive · Wellcome Library · Public domain (published before 1931)