Der Change Manager: Sich selbst und andere verändern
Klaus Doppler
Towards Effective Subject Leadership in the Primary School
Bell, Derek & Ritchie, Ron
Determining Project Requirements
Hans Jonasson
Statistical Quality Control Methods
Irving W. Burr
The Negativity Fast: Proven Techniques to Increase Positivity, ...
Anthony Iannarino
Managing Complex Systems: Thinking Outside the Box
Howard Eisner