From Big Medical Encyclopedia

SHELTERS — the engineering constructions intended for protection of people against means of mass defeat and usual types of weapon; have a tight entrance and an emergency (emergency) exit, are equipped with filtroventilyatsionny installation, means of communication, are provided with reserves of drinking water, food stuffs, means of rendering the first honey of the help; the elementary shelters are blindages, the blocked trenches, etc., however they do not provide reliable protection against all striking factors of weapons of mass destruction — see. Collective means of protection.