“Pola Aktivitas Enzim Ligninolitik Pleurotus Ostreatus Pada Limbah Sludge Pabrik Kertas Activity Pattern of Ligninolytic Enzyme of Pleurotus Ostreatus in Sludge Waste of Paper Factory”. 2016. E-Journal Menara Perkebunan 76 (1). https://doi.org/10.22302/iribb.jur.mp.v76i1.95.