URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/effects-of-selenium-enriched-high-protein-concentrate-supplementation-on-blood-metabolites-and-pregnancy-rate-in-beef-cows-fed-a-rice-straw--dcfcd07e645d245babe887e5e2daa016/9a7ed904-f737-11f0-ae8a-e4434b0aa6de
