?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Andrean+A&rft.au=Andrean+A%2C+Vhebry&rft.aufirst=Vhebry&rft.inst=Universitas+Negeri+Padang&rft.date=August+2015&rft.degree=Bachelor%2FTugas+Akhir&rft.title=Estimasi+Biaya+Rencana+Penambangan+Batubara+Tahun+2016+Kombinasi+Alat+Gali+dan+Angkut+terhadap+Efisiensi+Penambangan+Batubara+pada+PT.+Indo+Mining+Resources+Job+Site+Sinamar%2C+Kecamatan+Asam+Jujuhan%2C+Kabupaten+Dharmasraya%2C+Provinsi+Sumatera+Barat.