Gedek, W., Endres, A. and Dirksen, G. 1985. Current Resistance Patterns of Bacterial Pneumonia Pathogens and Therapeutic Considerations. The Bovine Practitioner. 1985, 20 (Nov. 1985), 128–132. DOI:https://doi.org/10.21423/bovine-vol1985no20p128-132.