Studies in Reflecting Abstraction
Jean Piaget & Robert L. Campbell
The Dream of Enlightenment
Anthony Gottlieb
Discovering Mathematics: A Problem-Solving Approach to Mathematical ...
Jaroslav Tišer & Jiří Gregor
Theoretical Concepts in Physics: An Alternative View of Theoretical ...
Malcolm S. Longair
A People's History of the United States
Howard Zinn
Data Analysis using Regression and Multilevel/Hierar[..] Models
Andrew Gelman & Jennifer Hill