Sönke Ahrens

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Books by Sönke Ahrens

Sönke Ahrens, Sönke Ahrens: How to Take Smart Notes (Paperback, 2017, CreateSpace Independent Publishing Platform)

How to Take Smart Notes

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Sönke Ahrens: Das Zettelkasten-Prinzip (Paperback, 2017, Books on Demand)

Das Zettelkasten-Prinzip

by