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4by Ratna, Ratna, Affan, Muhammad, Murni, Dewi, Ginting, Junita Setiana, Harahap, FitriatyGet Fulltext
Published 2013
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6by Ratna, Ratna, Prawoto, Amran Eko, Hartini, Sri, Wanti, Irini Dewi, Suprayetno, SuprayetnoGet Fulltext
Published 2008
Academic Paper