?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Sari%2C+Risna+Pravita&rft.aulast=Sari&rft.aufirst=Risna+Pravita&rft.degree=Bachelor&rft.inst=Universitas+Muhammadiyah+Prof.+DR.+HAMKA&rft.date=2021&rft.title=PENETAPAN+KADAR+KROMIUM+(VI)+PADA+MANGKOK+MELAMIN+YANG+BERCORAK+SECARA+SPEKTROFOTOMETRI+UV-VISIBEL