XII-11#16, Acidity Of Alcohols
26:35
XII-11#17, Acidity Of Phenols (1)
18:45
XII-11#15, Chemical Properties of Alcohols And Phenols
15:51
Acidity and Basicity of Alcohols
26:55
XII-11#18, Acidity of Substituted Phenols
19:03
THE RULES OF SEQUENCES
21:43
Pasé 100 Horas en las Pirámides!
3:19
When a physics teacher knows his stuff !!
30:26