Defeat Diphtheria
Defeat Diphtheria
Defeat Diphtheria na Kukaj.to. 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.
- Žánr:
- Země:
- Ředitel: Bladon Peake
- Herci: John Hilton,