?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Ramadhaniarti&rft.au=Ramadhaniarti%2C+Nurul&rft.aufirst=Nurul&rft.degree=Bachelor&rft.date=25+February+2022&rft.inst=Univerisitas+Muhammadiyah+Dr+Hamka&rft.title=Penentuan+Konsentrasi+Optimum+Kofaktor+Ion+Logam+Mn2%2B+Terhadap+Aktivitas+Xilanolitik+Enzim+Xilanase+Dari+Cairan+Rumen+Sapi+(Bos+Taurus+L.)