Ni’mah, Santi Alvian, onny setiani, and Suhartono. 2021. “SPATIAL ANALYSIS OF GANDONG RIVER WATER POLLUTION FROM LEATHER INDUSTRY AT MAGETAN DISTRICT”. International Journal of Health, Education & Social (IJHES) 4 (7), 1-12. https://doi.org/10.1234/ijhes.v4i7.165.