Una gota de agua (1949)

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.

• Release Date: 1949-04-13
• Runtime: 0h 10min
• Production Company: Comisión de Parques y Recreos Públicos de Puerto Rico
• Production Country: Puerto Rico
• Director: Jack Delano
• Writer: Edwin Rosskam