April 2020 Letter to members and friends of WtERT Dear members and friends of the GWCouncil, Attached please find a letter by Prof. Nickolas Themelis, Columbia University. Please click the link for the details. Share this post Yixi Tian2020-05-01T14:38:45-04:00May 1st, 2020|2020, 2020, Events, News|