- Author: Frederick A. Johnsen
- Language: English
- Year: 2014
- Author: Frederick A. Johnsen
- Language: English
- Year: 2005
- Author: Frederick A.Johnsen
- Language: English
- Year: 2006
- Author: Frederick A. Johnsen
- Language: English
- Year: 1998
- Author: Frederick A. Johnsen
- Language: English
- Year: 2014
- Author: Frederick A Johnsen
- Language: English
- Year: 2006
- Author: Frederick A Johnsen
- Language: English
- Year: 1996
- Author: Frederick A. Johnsen
- Language: English
- Year: 1997
- Author: Frederick A. Johnsen
- Language: English
- Year: 1999
- Author: Frederick A. Johnsen
- Language: English
- Year: 1996