YUKA STONE ART, CV D.I. Yogyakarta Natural Stone, Tovie, Kavire, Harianto. ammne@yahoo.com, yukastoneart@yahoo.com (62-274) 371264 http://www.yukastone.com/ (62-816) 4264624 (62-274) 371264 Jl Gedong Kuning Selatan No. 126 B, Banguntapan