Sutarno, Sutarno, Department of Chemistry, Gadjah Mada University, Indonesia

• Vol 9, No 2 (2020): December 2020 [Nationally Accredited - Sinta 2] - Articles
  Modified Humic Acid from Peat Soils with Magnetite (Ha-Fe3O4) by Using Sonochemical Technology for Gold Recovery
  Abstract  PDF