Viring, S., Boleske, G., Franklin, A., Rehbinder, V., Segal, T. and Troedsson, M. 1988. Bacteriological findings in nasal and lower respiratory tract samples of calves with acute respiratory disease. The Bovine Practitioner. 23 (Nov. 1988), 44–46. DOI:https://doi.org/10.21423/bovine-vol0no23p44-46.