Менделеев и воздухоплавание
Видеоролик о вкладе Д. И. Менделеева в развитие воздухоплавания и метеорологии.
5 months ago 01:15:02 1
5 months ago 01:07:12 1
5 months ago 00:12:34 1
5 months ago 00:02:38 1
5 months ago 00:10:07 1
5 months ago 00:28:19 1
5 months ago 00:34:19 1
5 months ago 00:13:56 1
5 months ago 01:13:35 1
5 months ago 00:46:19 1
5 months ago 03:43:23 1
5 months ago 00:03:41 1
5 months ago 00:55:37 1
5 months ago 00:47:05 1
5 months ago 00:47:52 1
5 months ago 00:04:02 1
5 months ago 00:25:51 1
5 months ago 00:25:56 1
5 months ago 02:23:55 1
5 months ago 00:26:00 1
5 months ago 00:22:36 1
5 months ago 00:26:00 1
5 months ago 02:11:29 1
5 months ago 00:53:25 1
