New Playlists at YouTube channel by Department of Earth Sciences "A. Desio"

Volcanic Rocks and Metamorphics Rocks

https://www.youtube.com/playlist?list=PLjNdGQ5s80bzciqF_U39GeEq_ovy7QgV_
https://www.youtube.com/playlist?list=PLjNdGQ5s80bw7s8EbUataua0EV7AgEg0K