
- Author: Roger Bartra, Mark A. Healey
- Language: English
- Year: 2002

- Author: Roger. Bartra, Nicholas Caistor
- Language: English
- Year: 2018

Chamanes y robots
epub
- Author: Roger Bartra
- Language: Spanish
- Year: 2019

- Author: Roger Bartra
- Language: Spanish
- Year: 2021

- Author: Roger Bartra
- Language: English
- Year: 2013

- Author: Roger Bartra
- Language: Spanish
- Year: 2006

- Author: Roger Bartra
- Language: Spanish
- Year: 2021

Regreso a la jaula
epub
- Author: Roger Bartra
- Language: Spanish
- Year: 2021

Cerebro y libertad
epub
- Author: Roger Bartra
- Language: Spanish
- Year: 2013

- Author: Roger Bartra
- Language: Spanish
- Year: 2018