- Author: Otto Friedrich
- Language: English
- Year: 1995
- Author: Otto Friedrich
- Language: English
- Year: 1995
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- Language: English
- Year: 2012
- Author: Wayne Muller
- Language: English
- Year: 2013
- Author: Richard A. Heckler Phd.
- Language: English
- Year: 2013
- Author: Nancy Peters
- Language: English
- Year: 2014
- Author: Nancy Peters
- Language: English
- Year: 2014
- Author: Roni Cohen-Sandler Ph.D.
- Language: English
- Year: 2013
- Author: Farah Jasmine Griffin
- Language: English
- Year: 1999
- Author: Streisand Barbra, Spada James
- Language: English
- Year: 2012