Bajo el signo libertario is a propaganda documentary, with the script and direction of Les (known for his articles in Solidaridad Obrera and the magazine Espectáculo) whose central theme is the reconstruction of the development of life in a libertarian community in the Aragonese town of Pina de Ebro.
| Writing | Les | Story |
| Writing | Les | Screenplay |
| Art | Juan Pallejá | Construction Coordinator |
| Directing | A. Martínez | Assistant Director |
| Crew | D. García | Cinematography |
| Directing | Les | Director |
