150 лет периодической таблице Менделеева
видео, в котором рассказывается о таблице Менделеева и использовании химии в наше время
2 weeks ago 00:21:31 1
3 weeks ago 00:15:31 1
1 month ago 01:08:22 10
2 months ago 00:00:00 1
2 months ago 00:57:22 1
2 months ago 00:13:57 1
2 months ago 02:44:37 2
2 months ago 01:30:25 42
2 months ago 00:00:00 2
2 months ago 02:40:04 182
2 months ago 00:05:20 1
2 months ago 00:10:32 1
2 months ago 00:35:01 1
3 months ago 01:52:03 1
3 months ago 03:23:28 1
3 months ago 01:54:36 1
4 months ago 01:34:38 1
4 months ago 01:21:58 1
4 months ago 03:28:27 1
4 months ago 00:15:52 1
4 months ago 00:05:37 1
4 months ago 00:03:32 1
4 months ago 00:09:33 1
4 months ago 00:00:00 1
