Editaton in Rostov-on-Don on May 18, 2018, with the participation of teams of 21 schools (more than 200 participants) of Rostov and the region, in the building of Rostov State University.
<a href="//commons.wikimedia.org/wiki/User:JukoFF" title="User:JukoFF">JukoFF</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>