by Superadmin · 6 January, 2016
25 Jun, 2012
12 Aug, 2012
12 Dec, 2018
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SPELEOLOGY RESEARCH
WATER TRACING (Tracing system of underground rivers Bribin and Seropan)
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PENETAPAN MENTERI ESDM TENTANG BENTANG ALAM KARST, JUNI 2012
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ACTIVITIES / EXPLORATION / SPELEOLOGY RESEARCH
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INDONESIA CAVE PHOTOGRAPHY EXHIBITION #1
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