URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/formula-pupuk-kompos-limbah-peternakan-dan-perkebunan-kelapa-sawit-dcfcd07e645d245babe887e5e2daa016/b28c27d4-1a14-11ed-a7a2-e4434b0aade8