UTILIZATION OF BANTAK AND MERAPI VOLCANIC ASH FOR POROUS PAVING BLOCK AS DRAINAGE CONTROL IN THE PRAMBANAN TEMPLE YARD. INTERNATIONAL JOURNAL OF GEOMATE [Internet]. 2016 Dec. 26 [cited 2026 Apr. 28];12(31):141-6. Available from: https://geomatejournal.com/geomate/article/view/1170