Hermiati, Hermiati, Eddy Nurtjahya, & Irdika Mansur. " Abundance and potency of Non-Symbiotic Nitrogen-Fixing Bacteria in Padang Sapu-sapu, Pejem Village, Bangka." BERKALA SAINSTEK [Online], 9.2 (2021): 95-102. Web. 19 Jul. 2024