Урок: “Углеводороды. Предельные углеводороды - Алканы.“
Шукшина Светлана Петровна - учитель химии “Саракташская средняя общеобразовательная школа №2“ Саракташского района Оренбургской области
Высшая кате...
2 months ago 00:04:28 1
2 months ago 00:42:28 1
2 months ago 00:03:10 1
2 months ago 00:05:14 1
2 months ago 00:06:41 1
1 month ago 00:11:53 1
2 months ago 00:19:19 1
4 months ago 00:04:38 1
5 months ago 02:08:54 1
5 months ago 00:13:57 1
5 months ago 07:32:22 1
7 months ago 00:19:28 1
8 months ago 00:06:23 1
8 months ago 00:00:50 1
8 months ago 07:11:19 6
8 months ago 00:21:13 1
9 months ago 00:14:45 1
9 months ago 00:10:17 1
9 months ago 00:29:20 1
9 months ago 00:15:35 1
9 months ago 00:08:48 3
10 months ago 00:01:17 1
10 months ago 00:14:05 5
11 months ago 00:06:00 1
