Una gota de agua
0.0/ 10 · 0K votes
1949-04-13
10m
ES
ReleasedStoryline
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.
Production
Comisión de Parques y Recreos Públicos de Puerto Rico
Cast
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