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Jasipto, Alio, Institut teknokogi sumatra
Juradi, Muhammad Idris
Publisher Mining Engineering Department, Faculty Science and Technology, Syarif Hidayatullah Jakarta State Islamic University,
Jl. Ir. H. Juanda No. 95, Ciputat, Jakarta 15412, Indonesia, Telp. 021-7492855, Fax. 021-7493351, website: http://journal.uinjkt.ac.id/index.php/jipl, e-mail: jipl.journal@uinjkt.ac.id