The Complete Project Management Office Handbook, Second Edition
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PMI-RMP (Risk Management Professional)
Carl Pritchard
Simplified Triz: New Problem Solving Application for Technical ...
David W. Conley & Ellen R. Domb & Kalevi Rantanen
PMP Project Management Professional Practice Exams
James L. Haner
Understanding Nonverbal Communication
Mark G. Frank
Qualitative Inhaltsanalyse: Grundlagen und Techniken
Philipp Mayring