ASSESSMENT OF HEAVY METAL POLLUTION IN THE SURFACE WATER OF THE DOI CANAL, THE CHO DEM AND BEN LUC RIVERS, VIETNAM. - Van Vu Duc THIEU; Binh An NGUYEN; Thi Thu Huong DINH; Thi Truc Thao NGUYEN; Thuy Lan Chi NGUYEN; Anh Duc PHAM (GeoScience Engineering, 2022)