- Author: Lewis Worthington Smith
- Language: English
- Year: 2015
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- Language: English
- Year: 2015
- Author: Michael Barr
- Language: English
- Year: 2018
- Author: David Diamantes
- Language: English
- Year: 2015
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- Language: English
- Year: 1976
- Author: Jane Stork
- Language: English
- Year: 2018
- Author: Christopher Portosa
- Language: English
- Year: 2013
- Author: Sandro Venturi
- Language: Italian
- Year: 2017
- Author: Anand Gupta
- Language: Italian
- Year: 2016
- Author: Richard Pask Bob Newell (editor)
- Language: English
- Year: 2018