Beginning of Philosophy
Hans-Georg Gadamer
Getting Started With OAuth 2.0
Ryan Boyd
Language Evolution
Morten H. Christiansen & Simon Kirby
History of Philosophy
Frederick Charles Copleston
Multidimensional Real Analysis I: Differentiation
J. J. Duistermaat & J. A. C. Kolk
Morphisms and Categories: Comparing and Transforming
Jean Piaget & Gil Henriques & Edgar Ascher & Terrance Brown