Insights and Illusions of Philosophy
Jean Piaget
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Stefan Decker & Jeen Broekstra & Michel Klein & Dieter Fensel & Frank van Harmelen & Ian Horrocks
Sociology Essentials
Robyn A. Goldstein Fuchs
A Glossary of English Grammar
Geoffrey N. Leech
The Sociology of Religion
Max Weber
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Mario Livio & I. Neill Reid & William B. Sparks
Philosophy of Mental Representation
Hugh Clapin