Descartes' Meditations on First Philosophy
Kurt Brandhorst
Objectivism: The Philosophy of Ayn Rand
Leonard Peikoff
The Life and Works of John Owen (55-In-1)
John Owen & William Goold
R Markdown Cookbook
Xie, Yihui & Christophe Dervieux & Emily Riederer
Economics
R. Glenn Hubbard & Anthony Patrick O'Brien
Schaum's Outline of Mathematica®, 2ed
Eugene Don
Schaum's Outline Series (1)