APPLICATION OF REED (Phragmites australis) IN TREATING HEAVY METAL CONTAMINATED SOIL IN TU LE LEAD-ZINC MINE, VAN CHAN DISTRICT, YEN BAI PROVINCE, VIETNAM - Pha, Tran Thi; Van, Dam Xuan; Ngoc, Dang Huy (International Journal of Advance Research and Innovative Ideas In Education, 2025)