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- Title
- Konzentration - Entspannen. Fit in 30 Minuten
- Language
- German
- Authors
- Björn Gemmer, Dirk Konnertz, Christiane Sauer
- Publisher
- Klett Ernst Verlag GmbH
- Released
- 2004
- Format
- Paperback
- Pages
- 128
- ISBN10
- 3129201920
- ISBN13
- 9783129201923
- Series
- Rating
- 3 out of 5


