https://biologijakp.com/vesti/%d0%ba%d0%b0%d0%bb%d0%b5%d0%bd%d0%b4%d0%b0%d1%80-%d1%82%d0%b0%d0%ba%d0%bc%d0%b8%d1%87%d0%b5%d1%9a%d0%b0-%d0%b8-%d1%81%d0%bc%d0%be%d1%82%d1%80%d0%b8-2018-19-%d1%81%d1%80%d0%b5%d0%b4%d1%9a%d0%b5-%d1%88/
Календар такмичења и смотри 2018/19- средње школе