C Cahyaningsih, AL Ritonga, S Aldila… - Journal of Geoscience …, 2018 - journal.uir.ac.id
Research areas were located in the west of Kolok Nan Tuo Village. Geographically this area
is located at coordinates 00 36'57, 85''-00 37'56, 89''latitude and 100 42'10, 08''100 43'47 …