- Author: DeVries Kelly, Smith Robert Douglas.
- Language: English
- Year: 2012
- Author: Smith Robert Elliott
- Language: English
- Year: 2019
- Author: Smith Robert Leo, Smith Thomas Michael
- Language: English
- Year: 2014
- Author: Smith Robert Elliott
- Language: English
- Year: 2019
- Author: Smith Robert V., Densmore Llewellyn D. ''Lou'', Lener Edward F., Llewellyn D. Densmore, Edward F. Lener
- Language: English
- Year: 2016
- Author: ManCh'ing Cheng, Smith Robert
- Language: English
- Year: 2011
- Author: Ehrenberg Ronald G., Smith Robert Stewart
- Language: English
- Year: 2015
- Author: Smith Robert Barr, Yadon Laurence J.
- Language: English
- Year: 2016
- Author: Garnett Mark, Mabon Simon, Smith Robert
- Language: English
- Year: 2018
ECOLOGÍA
pdf
- Author: Thomas M. Smith Robert Leo Smith
- Language: Spanish
- Year: 2008