https://www.youtube.com/watch?v=VHlsdN3WKNU

Published on June 25, 2021 13:40 by Terje Tvedt, Professor in History and Political Science

https://www.youtube.com/watch?v=VHlsdN3WKNU

Attached link

http://www.youtube.com/embed/VHlsdN3WKNU

Taxonomy

Purification
Technology
Environment
Infrastructure