The Oxford Dictionary of Philosophy
Simon Blackburn
The Handbook of Language and Gender
Janet Holmes & Miriam Meyerhoff
The Pythagoreans: Digest
Peter Kingsley & Ralph Maxwell Lewis & Ruth Phelps & Jean Guesdon & Ben Finger
Topics in Complex Analysis
Dorothy Brown Shaffer
Political Philosophy: A Very Short Introduction
David Miller
Very Short Introductions (1)
Indian Buddhist Philosophy
Amber Carpenter
Ancient Philosophies (1)