@article{
  author = {Mosaferi, صمد, Ettehad, سعید, Kooshavar, حسین},
  title = {Study on the relationship between milk urea nitrogen (MUN) and fertility in dairy cattle houses in Tabriz},
  journal = {Veterinary Clinical Pathology The Quarterly Scientific Journal},
  year = {2011},
  volume = {5},
  number = {2},
  pages = {1233-1245},
  doi = {}
}