Case study: World Cleanup Day
World Cleanup Day 2018 – Balticbest 2019 – Defolio
Estonia | World Cleanup Day 2022
World Cleanup Day 2021 is on 18th September! Get ready, set, go!!! - YouTube
Estonian grassroots to global — World Cleanup Day | Visit Estonia
Organizations | World Cleanup Day
World Cleanup Day aims to activate five per cent of the Earth's population
World Clean Up Day – Damian School
Estonian-inspired World Cleanup Day brings together 20 million people cleaning their countries
Let's Do It! Estonia (2008) - country clean-up with 50 000 volunteers - YouTube
20 mln people from 180 countries join World Cleanup Day initiated by Estonia
Estonia – Tõstamaa Keskkool | A Sense Of Community
World Cleanup Day aims to activate five per cent of the Earth's population
Estonia leading a World Cleanup Day — staying stubborn and uniting people — Estonia
Kutsume oma liikmeid... - Vastutustundliku Ettevõtluse Foorum | Facebook
Estonian grassroots to global — World Cleanup Day | Visit Estonia
World Cleanup Day 2022
World Cleanup Day Held on Saturday | World Cleanup Day Blogpost
Estonia - Paradise of the North: World Cleanup Day 2018
Over 38,000 people taking part in World Cleanup Day in Estonia | News | ERR
Kersti Kaljulaid - World Cleanup Day tähendus on palju suurem, kui see üks koristuspäev septembris. Sel päeval saab saab korraga üheskoos hulk riike palju puhtamaks ja see on meie kingitus maailmale Eesti
