PARTIE  CHIMIE

https://www.youtube.com/channel/UC8nXw-Z4JdPqGuuT2PYgSaw/videos

1Bac ChimieMr.LAKRIM1/7

https://www.youtube.com/watch?v=VdXWJItFcNs&list=PLXNmxB6YAxQfAm_JIs59NDVxVJG15Y-BD