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Copyright (c) 2021 Guntur RP Herdinata, Aristyanto Aristyanto, Fredy Eko Setiawan
Guntur RP Herdinata
Universitas Ngudi Waluyo
Indonesia
Aristyanto Aristyanto
Universitas Ngudi Waluyo
Indonesia
Fredy Eko Setiawan
Universitas Ngudi Waluyo
Indonesia