The Linguistics Student's Handbook
Laurie Bauer
Why Beauty Is Truth: A History of Symmetry
Ian Nicholas Stewart
Gesammelte Werke - Band I - Mysterium Cosmographicum de Stella ...
Johannes Kepler & Max Caspar
Mathematischer Zirkus
Martin Gardner
Truth and Ontology
Trenton Merricks
Educational Implications of Piaget's Theory
Irene J. Athey & Duane O. Rubadeau