Aplikasi Perhitungan Tingkat Kesuburan Perairan Dengan Metode Carlson Pada Perairan Urban Danau Polder Air Hitam Di Kota Samarinda: Application of Carlson Trophic State Index on Trophic State Determination of Urban Polder Air Hitam Lake in Samarinda City. jipt 2023, 2 (1), 73-78. https://doi.org/10.30872/jipt.v2i1.494.