KONDISI GEOLOGI DAN SPELEOLOGI KARST AKETAJAWE – 13 March, 2017 by ASC-Jogja · Published 13 March, 2017 · Last modified 21 December, 2024
ETIKA DAN MORAL PENELUSURAN GUA 21 March, 2013 by ASC-Jogja · Published 21 March, 2013 · Last modified 21 December, 2024
WATER TRACING (Tracing system of underground rivers Bribin and Seropan) 27 March, 2012 by ASC-Jogja · Published 27 March, 2012 · Last modified 21 December, 2024