Items where Author is "Haris, Jefri Anto"
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Haris, Jefri Anto (2017) Desain Terowongan Development di Wilayah Ombilin I Sawahluwung PT. Bukit Asam (Persero) Tbk, Unit Pertambangan Ombilin Sawahlunto. Bachelor/Skripsi thesis, Universitas Negeri padang.