- Author: Thomas M. Smith, Robert Leo Smith, Isubel Waters
- Language: English
- Year: 2015
- Author: Robert Leo Smith
- Language: English
- Year: 1996
- Author: Robert Leo Smith, Thomas Michael Smith
- Language: English
- Year: 2015
- Author: Smith Robert Leo, Smith Thomas Michael
- Language: English
- Year: 2014
ECOLOGÍA
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- Author: Thomas M. Smith Robert Leo Smith
- Language: Spanish
- Year: 2008
- Author: Smith Robert Leo, Smith Thomas M.
- Language: English
- Year: 2015
- Author: Thomas M. Smith Robert Leo Smith
- Language: English
- Year: 2012