Suprayogi D, Nengse S, Hakim A. Analisis Kualitas Air Sungai Bawah Tanah Gua Ngerong, Kecamatan Rengel, Tuban. alard [Internet]. 2019 Dec. 18 [cited 2024 Apr. 16];5(1):45-53. Available from: https://jurnalsaintek.uinsby.ac.id/index.php/alard/article/view/748