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1Siregar, Ahmad Samin, Sukapiring, Peraturen, Tarigan, Sentosa, Sembiring, Matius Cikappen, Zulkifly, ZulkiflyGet Fulltext
Հրապարակվել է 2001
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2Siahaan, E.K, Usman, Burhanuddin Ch, Sukapiring, Peraturen, Bakar, Abu, Chalil, Hayati, Pulungan, AmrizalGet Fulltext
Հրապարակվել է 1977
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Academic Paper