?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=SINAGA%2C+RAI+JAYA&rft.aufirst=RAI+JAYA&rft.aulast=SINAGA&rft.degree=Other&rft.tpages=76&rft.title=PENERAPAN+PEMELIHARAAN+MESIN+ELEVATOR+DI+PT+NAGAMAS+PALMOIL+LESTARI&rft.date=8+October+2019&rft.inst=Sekolah+Tinggi+Teknologi+Dumai