?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Simanjuntak&rft.au=Simanjuntak%2C+Rika+Almaida&rft.aufirst=Rika+Almaida&rft.inst=Universitas+Negeri+padang&rft.date=October+2018&rft.degree=Bachelor%2FSkripsi&rft.title=Tinjauan+Sistem+dan+Kinerja+Manajemen+Keselamatan+%26+Kesehatan+Kerja+CV.+Tahiti+Coal%2C+Talawi%2C+Sawahlunto%2C+Sumatera+Barat