- Author: Michael Vickers
- Language: English
- Year: 2000
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- Year: 2017
- Author: Michael Vickers
- Language: English
- Year: 2015
- Author: Hildegard Wiegel Michael Vickers
- Language: English
- Year: 2013
- Author: Alexander Rubel, Michael Vickers
- Language: English
- Year: 2014
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- Language: English
- Year: 2014