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Hardi Prasetiawan
https://www.facebook.com/abang.anzang

Ahmad Dahlan University
Indonesia

Hardi Prasetiawan
Ahmad Dahlan University
Indonesia


10.24127/gdn.v6i1.409

829 Views, Vol 6, No 1 (2016) Section: ARTICLES Submitted: 2016-04-21 Published: 2016-06-13