?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Rima+Melati&rft.aulast=Ratna&rft.au=Ratna%2C+Rima+Melati&rft.degree=S1&rft.date=3+September+2010&rft.title=PENGARUH+DERAJAT+KEASAMAN+(pH)+SISTEM+PADA+DAYA+ADSORPSI+ION+TIMBAL(II)+OLEH+KITOSAN+DARI+CANGKANG+KEPITING+HIJAU+(Scylla+serrata)&rft.inst=UNY