Kusmiyati, K., Waangsir, F. W. F., Mauguru, E. M. and Tokan, M. K. (2022) “Bacteriological quality and environment risk of water pollution of dug wells on Semau Island, Indonesia”, International journal of health sciences, 6(S9), pp. 732–746. doi: 10.53730/ijhs.v6nS9.12324.