Кремний, основа жизни Научфильм. СССР
Кремний, мы должны это знать. (Хвощ полевой, о нем тоже поищите инф. дешево и сердито)
2 months ago 00:06:01 1
2 months ago 00:12:44 1
2 months ago 00:16:40 1
2 months ago 00:11:45 1
2 months ago 00:08:05 1
3 months ago 00:03:50 1
3 months ago 00:10:32 1
3 months ago 00:12:24 1
3 months ago 02:38:14 5
3 months ago 00:03:30 1
3 months ago 00:32:49 1
3 months ago 00:02:39 1
3 months ago 00:05:52 1
3 months ago 00:00:22 1
3 months ago 00:04:37 1
3 months ago 00:05:15 1
3 months ago 01:28:10 1
3 months ago 01:00:03 1
3 months ago 00:01:13 1
3 months ago 00:08:53 1
3 months ago 00:03:33 1
3 months ago 00:13:23 1
3 months ago 00:09:16 1
3 months ago 00:11:21 1
