2025. DIVERSITY OF FERNS (PTERIDOPHYTA) WITH DIFFERENT VEGETATION IN FOREST AREAS BUKUM VILLAGE, SIBOLANGIT SUB-DISTRICT. BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan. 11, 2 (Sep. 2025), 147–158. DOI:https://doi.org/10.22373/biotik.v11i2.19348.