Wagas, E.C. et al. 2016. Biophysical Survey of the Hinatuan Enchanted River Underwater Cave System (HERUCS) and its Connecting River, Surigao del Sur, Southern Philippines. Annals of Tropical Research. 38, 1 (Jul. 2016), 148–158. DOI:https://doi.org/10.32945/atr38112.2016.