Thanh Giao, N. (2020). Spatial Variations of Surface Water Quality in Hau Giang Province, Vietnam Using Multivariate Statistical Techniques: DOI: 10.32526/ennrj.18.4.2020.38. nvironment and atural esources ournal, 18(4), 400-410. etrieved from https://ph02.tci-thaijo.org/index.php/ennrj/article/view/240801