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Optimismus ist besser, Alan Loy McGinnis
- Language
- Released
- 1992
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- Title
- Optimismus ist besser
- Language
- German
- Authors
- Alan Loy McGinnis
- Publisher
- Scherz
- Released
- 1992
- ISBN10
- 3502134502
- ISBN13
- 9783502134503
- Category
- Psychology