Triyono, Sugeng, Agus Haryanto, Dermiyati Dermiyati, and Jamalam Lumbanraja. 2019. “The Effects Of Empty Fruit Bunch Treatments For Straw Mushroom Substrate On Physicochemical Properties Of A Biofertilizer”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) 8 (2):120-29. https://doi.org/10.23960/jtep-l.v8i2.120-129.