2015 CS sec 1&2
745 subscribers
https://t.me/+kiq5XVgQ0G5kYTQ0 - group link


https://t.me/+hDKWOol_kY9hZGY8 - channel link for materials on CS year 1.
If you have Telegram, you can view and join
2015 CS sec 1&2 right away.