Ferrari Pinem*, Sigit Purnomo*, Aris Poniman*, Suharto Widjojo*, Mulyanto Darmawan*
Ferrari Pinem*, Sigit Purnomo*, Aris Poniman*, Suharto Widjojo*, Mulyanto Darmawan* * National Coordinating Agency for Surveys and Mapping (BAKOSURTANAL) INDONESIA