Detailed coal exploration in Napal, Peranap, Riau, Sumatera, Indonesia
Artikel Jurnal
Mineral matter and its identification in Indonesian coal
Artikel Jurnal
Proposal for improving simple jaw crusher performance
Artikel Jurnal
S. Budi Utomo, author
Evaluasi pengusahaan pertambangan batubara dalam rangka pelaksanaan otonomi daerah
Fakultas Teknik Universitas Indonesia, 2003
UI - Tesis (Membership)
Proceedings of international conference on mining and the environment : Bandung, Indonesia, July 2-4, 1991
Department of Mining Engineering, ITB , 1992
Buku Referensi
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