Characteristic lignocellulose of sago solid waste for biogas production

by Hammado Nururrahmah, Utomo Sudarno, Budiyono Budiyono
Published 2020-01-01

Water quality assessment and control efforts use the pollution index method in the Sikendil river

by Lenty Hoya Ade, Nany Yuliastuti, Utomo Sudarno, Ramadhani Maharlika Andrea
Published 2020-01-01