Fulton, R.W., Cook, B.J., Blood, K.S., Confer, A.W., Payton, M.E., Step, D.L., Saliki, J.T., Burge, L. J. and Welsh, R.D. 2010. Immune response to bovine respiratory disease vaccine immunogens in calves at entry to feedlot and impact on feedlot performance. The Bovine Practitioner. 45, 1 (Dec. 2010), 1–12. DOI:https://doi.org/10.21423/bovine-vol45no1p1-12.