Bryant, T.C., Nichols, J.R., Rogers, K.C., Farmer, T.D., Miles, D.G., Campbell, J. and Richeson, J.T. 2011. Effect of trivalent modified-live virus respiratory vaccine on performance, health, and carcass traits of lightweight feeder steers. The Bovine Practitioner. 45, 2 (Jun. 2011), 124–130. DOI:https://doi.org/10.21423/bovine-vol45no2p124-130.