Defeat Diphtheria
Defeat Diphtheria
Guarda defeat diphtheria su StreamingCommunity. This film explains with some simple diagrams the nature of diphtheria, tells how the anti-toxin was discovered and shows parents the part they must play in protecting their children.
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- Nazione:
- Direttore: Bladon Peake
- Cast: John Hilton,
