[NACIONAL] On World Ozone Day: Major reforestation action of Grubišno Polje using an unmanned aerial vehicle20.09.2021.
![[NACIONAL] On World Ozone Day: Major reforestation action of Grubišno Polje using an unmanned aerial vehicle](https://storage.googleapis.com/o2-article-images/articles/48b71e7f-8433-4a6a-98c3-90631dbee179.jpeg)
