Nguyen, G. (2020) “EVALUATING SURFACE WATER QUALITY AND TESTING FREQUENCY IN TIEN AND HAU RIVERS, AN GIANG PROVINCE, USING 10-YEAR MONITORING DATA”, TRA VINH UNIVERSITY JOURNAL OF SCIENCE, 10(37), pp. 78-88. doi: 10.35382/18594816.1.37.2020.379.