https://btc2026.dfcgreece.org/submission/children-protect-the-art-of-their-city-5th-grade-of-the-arsakeion-primary-school-of-thessaloniki/2026-10-13T03:22:33+03:00https://btc2026.dfcgreece.org/submission/the-naxos-potato-students-stand-up-for-their-land-6th-grade-vivlos-primary-school-naxos-greece/2026-10-13T03:22:09+03:00