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- Language: English

- Author: Edmund Conway
- Language: English
- Year: 2009

- Author: Joanne Baker
- Language: English
- Year: 2011

- Author: Ian Crofton
- Language: English
- Year: 2013

- Author: Philip Wilkinson
- Language: English
- Year: 2013

- Author: Moheb Costandi
- Language: English
- Year: 2013

- Author: Peter Stanford
- Language: English
- Year: 2010

- Author: Adrian Furnham
- Language: English
- Year: 2009

- Author: Mark Henderson
- Language: Spanish
- Year: 2010