О фильме
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.
Описание на русском пока не добавлено.
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.
Описание на русском пока не добавлено.
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