Penulis Eric Ricardo Go Grace Mogi Rudy Pusung DOI: https://doi.org/10.32400/gc.8.4.25115.2013 Kata Kunci: Abstrak Unduhan PDF (English) Diterbitkan 2013-12-31 Terbitan Vol 8 No 4 (2013) Bagian Articles Lisensi Author keep the copyright of the article published in this journal