@misc{ais_repository_2884,
  title = {Analisis Biaya Operasional Penambangan Batubara Tambang Bawah Tanah PT. Nusa Alam Lestari Desa Salak Kecamatan Talawi Kota Sawahlunto Provinsi Sumatera Barat},
  author = {None},
  year = {2019},
  publisher = {},
  howpublished = {Repository AIS},
  note = {oai:ais:library-item:2745}
}