A Comparison of serological responses when modified-live infectious bovine rhinotracheitis virus vaccine, Mannheimia haemolytica bacterin-toxoid and Leptospira pomona bacterin are administered with needle-free versus conventional needle-based injection in Holstein dairy calves. Bov. pract. 2005;39(2):110-114. doi:10.21423/bovine-vol39no2p110-114