Defense passive. En cas d'alerte. A partir du moment ou l'alerte est donnee, les habitants disposent de 10 a 15 minutes avant l'arrivee des avions ennemis. Ils doivent donc, sans precipitation inutile: 1. Se munir des masques destines a la famille ; ... 2. Fermer les portes interieures ... 3. Eteindre toutes les lumieres [&c., &c.]
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