Домашняя лаборатория. Лента Мёбиуса.
Команда читателей библиотеки представляет серию занимательных экспериментов с бумажными лентами.
5 years ago 00:08:46 333
5 years ago 00:10:50 12
2 years ago 00:07:01 7
5 years ago 00:24:05 27
5 years ago 00:07:34 9
2 years ago 00:25:28 88
4 years ago 00:02:43 6
3 years ago 01:13:13 5
7 years ago 00:06:41 54
2 years ago 00:02:24 1
12 months ago 01:21:01 1
9 years ago 00:06:41 138
5 years ago 00:06:02 6
7 years ago 00:06:14 5
9 years ago 00:06:37 108
1 year ago 00:08:06 27
9 years ago 00:08:59 127
7 years ago 00:09:36 19
3 years ago 00:00:55 247
4 years ago 00:06:52 174
1 year ago 00:06:01 8
9 years ago 00:05:52 194
5 years ago 00:05:03 11
5 years ago 00:05:51 10
