Soil Structure Characteristics in Three Mountainous Regions in Bulgaria Under Different Land Uses. - Kercheva, Milena; Paparkova, Tsvetina; Dimitrov, Emil; Doneva, Katerina; Nedyalkova, Kostadinka; Perfanova, Jonita; Sechkova, Rosica; Velizarova, Emiliya; Glushkova, Maria (Forests (19994907), 2025)