@inproceedings{paperid:200468, author = {Rad, Mehrnaz and Seifi, Hesam A}, title = {The study on the rate of Moraxella bovis infection in IBK infected calves}, booktitle = {كتابچه خلاصه مقالات بيست و دومين كنگره جهاني بيماريهاي گاو}, year = {2002}, }