?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Wahyu+L&rft.au=Wahyu+L%2C+Sitra&rft.aufirst=Sitra&rft.inst=Universitas+Negeri+padang&rft.date=January+2019&rft.degree=Bachelor%2FSkripsi&rft.title=Investment+Analisys+Planning+untuk+Kelayakan+Ekonomi+Penambangan+Batubara+pada+Blok+A+PT.+Tebo+Agung+International