Diversity of Aquatic Beetles (Dytiscidae) along the Altitudinal Gradient and its Relationship with Physico-Chemical Parameters of Water at Tashiding, Tsendagang and Gozhi Gewogs, Dagana, Bhutan. Int. J. Environ. 2023;12(1):61-78. doi:10.3126/ije.v12i1.52443