Sembiring H, Suprawadi R, Tanjung N. TRAINING ON MAKING CLEAN WATER PROCESSING UNITS FOR PERMANENT RESIDENTIAL COMMUNITIES I NANGBELAWAN VILLAGE I SIMPANG EMPAT DISTRICT KARO REGENCY: PELATIHAN PEMBUATAN UNIT PENGOLAH AIR BERSIH MASYARAKAT HUNIAN TETAP I DESA NANGBELAWAN I KECAMATAN SIMPANG EMPAT KABUPATEN KARO. ENGA COMSER EMPO DEV [Internet]. 2022Aug.8 [cited 2026May12];2(2):175-81. Available from: http://ijecsed.esc-id.org/index.php/home/article/view/56