- Author: Robert E. Svoboda
- Language: English
- Year: 2011
- Author: Robert E. Svoboda
- Language: Spanish
- Year: 1986
- Author: Hart de Fouw, Robert E. Svoboda
- Language: English
- Year: 2000
- Author: Robert E. Svoboda
- Language: English
- Year: 2015
- Author: Robert E. Svoboda
- Language: English
- Year: 1998
- Author: Robert E. Svoboda
- Language: English
- Year: 2013
- Author: Robert E. Svoboda
- Language: english
- Year: 2004
- Author: Dr Robert E Svoboda Robert E. Svoboda
- Language: English
- Year: 1997
- Author: Dr Robert E Svoboda Robert E. Svoboda
- Language: English
- Year: 1997
- Author: Robert E. Svoboda
- Language: English
- Year: 1998