Deutsche Nationalbibliogra[..] Amtsblatt. Monografien und Periodika. ...
Die Deutsche Nationalbibliothek
Top 10 Types of Leadership Power
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Top 10 Development Goals for Better Leadership
Research and Practice on the Theory of Inventive Problem Solving ...
Leonid Chechurin
Goal Directed Project Management: Effective Techniques and Strategies
Erling S. Andersen & Kristoffer V. Grude & Tor Haug
Social Research Methods: Qualitative and Quantitative Approaches
William Lawrence Neuman