Penulis Chriswanto Ignatius Makitulung Ventje Ilat Treesje Runtu DOI: https://doi.org/10.32400/gc.14.1.22322.2019 Kata Kunci: Abstrak Unduhan PDF (English) Diterbitkan 2019-04-30 Terbitan Vol 14 No 1 (2019) Bagian Articles Lisensi Author keep the copyright of the article published in this journal