Son, Nguyen, Nguyen Xuan Quynh, & Nguyen Van Vinh. " Using Macro-Invertebrates as Bio-indicators to Assess Water Quality in Selected Water Bodies of Xuan Son National Park, Phu Tho Province." VNU Journal of Science: Natural Sciences and Technology [Online], 32.1S (2016): n. pag. Web. 22 Dec. 2024