THE QUALITY OF BAKTERIOLOGIS STUDY AND USE OF WATER OR DUG WELLS WITH AN OCCURRENCE WATER BORNE DISEASES IN THE VILLAGE WEST PASAYANGAN. preventif [Internet]. 2020 Jul. 27 [cited 2025 Sep. 30];9(1):15-20. Available from: http://103.245.72.38/index.php/preventif/article/view/80