Article Metrics
Abstract view : 411 times |Refbacks
- There are currently no refbacks.
Copyright (c) 2019 Ayu Ashari, Sumiati Side, S. Sugiarti
![Creative Commons License](http://licensebuttons.net/l/by-nc-sa/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.