Petrov, K. ., Tsonkov, N. ., & Slaveva, K. . (2024). Regional Development Of Municipalities With A Population Of 10 To 30 Thousand In The North-Eastern And South-Eastern Planning Regions Of Bulgaria. Journal of Ecohumanism, 3(8), 3626–3640. https://doi.org/10.62754/joe.v3i8.5029