Videofilme:
1.Alexandru Butlerov- chimistul rus.- https://www.youtube.com/watch?v=uX33WtZJ8bo
2.Teoria Structurii Chimice a lui A.M.Butlerov. -https://www.youtube.com/watch?v=N50xlKLqqBg
1.Alexandru Butlerov- chimistul rus.- https://www.youtube.com/watch?v=uX33WtZJ8bo
2.Teoria Structurii Chimice a lui A.M.Butlerov. -https://www.youtube.com/watch?v=N50xlKLqqBg