Hoang Oanh, Le Thi, Luu Minh Loan, Nguyen Van Hao, & Dinh Thi Thuy. " Turbidity Removal Efficiency of Tannin Based Flocculants Derived from Different Agricultural Waste." VNU Journal of Science: Earth and Environmental Sciences [Online], (0): n. pag. Web. 24 Nov. 2024