Items where Author is "Ratna , Herawati"
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Thesis
Ratna , Herawati (2010) Pengaruh Konsentrasi Asam Sulfat (HZSO4) Pada Efisiensi Adsorpsi Tanah Diatomae Terhadap Ion Logam Berat Kromium(III) dan Kromium(VI). S1 thesis, UNY.