CASAS, A.; CIANZIO, D.; ARROYO-AGUILÚ, J. A. Effect of the number of boluses and time of administration on ruminants’ fecal excretion pattern of chromium oxide. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 83, n. 3-4, p. 123–134, 1999. DOI: 10.46429/jaupr.v83i3-4.3883. Disponível em: Acesso em: 29 mar. 2023.