Penulis Leonardus I Made Deftrianto David P. E. Saerang Steven J. Tangkuman DOI: https://doi.org/10.32400/gc.13.01.18833.2018 Abstrak Unduhan PDF (English) Diterbitkan 2018-03-31 Terbitan Vol 13 No 01 (2018) Bagian Articles Lisensi Author keep the copyright of the article published in this journal