Trigonometry Cheat Sheet
Unknown
21 Days of Effective Communication
Ian Tuhovsky
The Best Writing on Mathematics 2018
Mircea Pitici
Delphi Complete Works of John Locke (Illustrated)
John Locke
Scientific Method in Ptolemy's Harmonics
Andrew Barker
Geographies of Science
Peter Meusburger & David Livingstone & Heike Jöns
Knowledge and Space (3)