Marpaung, Rony Genevent Tonang, Students of Mathematics Postgraduate, Faculty of Mathematics and Natural Science, Universitas Sumatera Utara, Indonesia
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LOKASI
Le Polonia Hotel & Convention
Jl. Jenderal Sudirman No. 14-18, Madras Hulu, Medan Polonia, Kota Medan, Sumatera Utara
KONTAK
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