Utilization of HVS Paper Waste for The Manufacture of Oxalic Acid - Subyakto, Agung; Department of Industrial Chemical Engineering, Faculty of Vocational Studies, Institut Teknologi Sepuluh Nopember, Kampus ITS, Sukolilo, Surabaya, 60111 (Lembaga Penelitian dan Pengabdian kepada Masyarakat, 2021)