MATHEMATICS.
Leybourn, William, 1626-1700?
Pleasure with profit: consisting of recreations of divers kinds, viz. numerical, geometrical, mechanical, statical, astronomical, horometrical eryptographical, magnetical, automatical, chymical, and historical ... By William Leybourn ... To this work is also annext, A treatise of algebra, according to the late improvements, applied to numerical questions and geometry; with a new series for the speedy extraction of
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