Execution - Discipline of Getting Things Done (Summary)
Paul Minors & Lawrence Bossidy
Why We Sleep: Unlocking the Power of Sleep and Dreams
Matthew Walker
Knowing Full Well
Ernest Sosa
Smarandache Semigroups
W. B. Vasantha Kandasamy
Calculus using Mathematica®
K. D. Stroyan
Die Beziehungen zwischen dem Ich und dem Unbewussten
Carl Gustav Jung
Also sprach Zarathustra I-IV
Friedrich Wilhelm Nietzsche