Frank J. Swetz (The Pennsylvania State University), "Mathematical Treasure: Bartholomaeus Keckermann's Systema compendiosum totius mathematices," Convergence (September 2020) https://maa.org/press/periodicals/convergence/mathematical-treasure-bartholomaeus-keckermanns-systema-compendiosum-totius-mathematices #Maths #Math #Mathematics #Book #STEM