?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Hadirahmanto%2C+Afif+Tribawono&rft.aulast=Hadirahmanto&rft.aufirst=Afif+Tribawono&rft.degree=S1&rft.title=PREPARASI+DAN+KARAKTERISASI+ZEOLIT+BERBASIS+FLY+ASH+BATUBARA+DAN+UJI+ADSORPSI-DESORPSINYA+TERHADAP+ION+AMMONIUM+(NH4%2B)&rft.date=30+October+2017&rft.inst=Universitas+Pendidikan+Indonesia