?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Ramadhan&rft.au=Ramadhan%2C+Randa&rft.aufirst=Randa&rft.title=Kajian+Potensi+Flying+Rock+Peledakan+terhadap+Radius+Aman+Alat+Peremuk+Crusher+di+Cv+Tekad+Jaya+Halaban+Kabupaten+Lima+Puluh+Kota+Sumatera+Barat&rft.degree=Bachelor%2FSkripsi&rft.inst=Universitas+Negeri+Padang&rft.date=May+2020