Comment on "RETC2019 - Rapid Excavation and Tunneling Conference 2019"
...ng Conference 2019. In recent times some sites appeared, mostly from Russia which supposedly let you down...n noticing, as a part of Putin's massive disinformation network. Russian or not. Just resist the temp...
cover tunnel photo by: Matt Brown from London, England / CC BY
Copyright 2019-2024 TunnelContact.com