JOKO RAHARJO, S.; IN OKTAVIA, A.; OKTAVIA RAHAYU, L. Education and Mentoring on Organic Fertilizer Using PGPR Biodecomposer for Karang Taruna BABE in Bakalan, Bululawang, Malang Regency. Engagement: Jurnal Pengabdian Kepada Masyarakat, v. 8, n. 2, p. 469 -482, 13 Nov. 2024.