Shaleh, Fuquh Rahmat, Faisol Mas’ud, and Tri Rochmah Damayanti. 2020. “Analisis Kualitas Air Di Rawa Sier-Sier Kecamatan Babat Kabupaten Lamongan”. Grouper 11 (1):14-19. https://doi.org/10.30736/grouper.v11i1.72.