URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/rubber-based-agroforestry-systems-associated-with-food-crops--a-solution-for-sustainable-rubber-and-food-production--dcfcd07e645d245babe887e5e2daa016/92edbe27-37a8-11ef-ae9c-e4434b0aa6de