«Уроки безопасности»
Тема лекции по ОБЖ: Гражданская оборона, основные понятия и определения, задачи гражданской обороны.
10
3 months ago 00:08:17 1
4 months ago 00:58:47 1
5 months ago 00:03:16 1
5 months ago 00:33:00 1
6 months ago 01:37:46 1
6 months ago 00:56:43 1
6 months ago 00:42:49 1
6 months ago 02:50:54 1
6 months ago 01:01:22 8
6 months ago 00:12:32 1
6 months ago 00:20:30 1
6 months ago 00:37:25 1
6 months ago 00:01:25 2
6 months ago 00:09:52 19
6 months ago 00:06:52 3
6 months ago 00:37:34 1
6 months ago 00:13:50 4
6 months ago 00:31:26 1
6 months ago 00:28:51 1
6 months ago 01:05:05 1
6 months ago 00:30:46 1
6 months ago 00:16:29 1
6 months ago 00:10:19 1
6 months ago 00:29:42 1
