Rare Books

The ground of arts: : teaching the perfect worke and practise of arithmeticke, both in whole numbers and fractions, after a more easie and exact forme then in former time hath beene set foorth: made by Mr. Robert Record Dr. in Physicke. Afterwards augmented by Mr. Iohn Dee. And since enlarged with a third part of rules of practise, abridged into a briefer method then hitherto hath beene published, with diuers necessary rules incident to the trade of merchandise: with tables of the valuation of all coynes as they are currant at this present time