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Thomas Liebetruth
A Guide to the Project Management Body of Knowledge
Project Management Institute, Inc.
How to Keep Your Cool: An Ancient Guide to Anger Management
Seneca
Content Atomization and the Efficiency Principle
The Superhero Institute
Kompetenzbasiertes Projektmanagement (PM4): Handbuch für Praxis ...
Kompetenzbasiertes Projektmanagement (PM4)
The 17 Essential Qualities of a Team Player: Becoming the Kind ...
John C. Maxwell