2018. Study the Use Value of Ecosystem Mangrove in Tanjung Batu Village Derawan Island Subdistric, Berau Regency . Jurnal Pembangunan Perikanan dan Agribisnis. 5, 2 (Jul. 2018), 49–57. DOI:https://doi.org/10.30872/jppa.v5i2.137.