Amílcar Tirado
Narrator
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Documentary
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.
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| Release Date | 1949-04-13 |
|---|---|
| Runtime | 10m |
| Director | Jack Delano |
| Producer | |
| Writer | Edwin Rosskam |
