?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Toni&rft.au=Toni%2C+Toni&rft.aulast=Toni&rft.date=8+August+2016&rft.inst=Universitas+Muhammadiyah+Prof.+Dr.+HAMKA&rft.degree=Bachelor&rft.title=Pengaruh+Larutan+CaCO3+Terhadap+Gas+Buang+Kendaraan+Bermotor