Una gota de agua
Una gota de agua
Una gota de agua en PortalulTauTV. A drop of water is taken to a laboratory in San Juan, Puerto Rico to determine its purity. The film communicates scientific health information, such as the need to boil drinking water.
- Gen: Documentar
- Țară: Puerto Rico
- Director: Jack Delano
- Distribuție: Amílcar Tirado,
