Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)Ilham Zulfahmi, Agung Setia Batubara, Rizwan Ali, Ayu Wulandari Nasution, Bela Puspita and Badratun NafisBIO Web Conf., 156 (2025) 02015DOI: https://doi.org/10.1051/bioconf/202515602015