@inproceedings{paperid:1015002, author = {Mohammadi, Gholam Reza and -, -}, title = {Reasons for culling of Holstein dairy cows in north east of Iran}, booktitle = {13th International Conference Production diseases in farm animals}, year = {2007}, location = {Liepzig, IRAN}, keywords = {Reasons for culling of Holstein dairy cows in north east of Iran}, }