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Christoph J. Kellner

3 books found

Cover of Kollaboratives Wissensmanagement

Kollaboratives Wissensmanagement

Richard Grasshoff, Christoph J. Kellner · First published 2023

Cover of Not for me, please! I choose to act green

Not for me, please! I choose to act green

Maria Godsey, Christoph J. Kellner · First published 2019

Cover of Not for me, please!

Not for me, please!

Maria Godsey, Christoph J Kellner · First published 2018