People of the Underground Railroad: A Biographical Dictionary
Tom Calarco
Mathematical Thought: An Introduction to the Philosophy of Mathematics ...
Evert William Beth
C.S. Lewis Essay Collection & Other Short Pieces
C. S. Lewis
Nonmonotonic Reasoning: Logical Foundations of Commonsense
Gerhard Brewka
Enneagram
Don Richard Riso & Russ Hudson
Numerical Inversion of the Laplace Transform: Applications to ...
Richard Ernest Bellman & Robert E. Kalaba & Jo Ann Lockett