
- Author: George G. Szpiro
- Language: English
- Year: 2020

- Author: George G. Szpiro
- Language: Chinese
- Year: 2021

- Author: George G. Szpiro
- Language: English
- Year: 2008

- Author: George G. Szpiro
- Language: English
- Year: 2020

- Author: George G. Szpiro
- Language: English
- Year: 2011

- Author: George G. Szpiro
- Language: English
- Year: 2020

- Author: George G. Szpiro
- Language: English
- Year: 2003

- Author: George G. Szpiro M. Junker
- Language: German
- Year: 2011

- Author: George G. Szpiro
- Language: Italian
- Year: 2013

- Author: George G. Szpiro
- Language: English
- Year: 2006