Penulis Rudy Pusung DOI: https://doi.org/10.32400/gc.9.3.6121.2014 Kata Kunci: Abstrak Unduhan PDF (English) Diterbitkan 2014-09-30 Terbitan Vol 9 No 3 (2014) Bagian Articles Lisensi Author keep the copyright of the article published in this journal