The Population Bomb
Paul R. Ehrlich
What is Man?
Mark Twain
Intermediate Irish: A Grammar and Workbook
Nancy Stenson
What Is Religion?
Paul Tillich
Lie Algebras
Ian Nicholas Stewart
The Voice of Reason: Essays in Objectivist Thought
Ayn Rand & Leonard Peikoff & Peter Schwartz
Objectivism: The Philosophy of Ayn Rand
Leonard Peikoff