Pelatihan Pembuatan Biobriket Ramah Lingkungan Berbahan Dasar Campuran Limbah Bonggol Jagung Ampas Kopi Serbuk Gergaji Kayu Kelompok Masyarakat Petani (GAPOKTAN) KM 12 Balikpapan Utara : Training on Making Biobriquettes Using Corncob Coffee Ground Wood Sawdust-Based Agriculture Waste for the Farmers Community Group (GAPOKTAN) KM 12 North Balikpapan. B.JPMI 2021, 4 (1), 1-9. https://doi.org/10.11594/bjpmi.04.01.01.