%0 Conference Proceedings %T REASONS FOR CULLING IN HOLSTEIN DAIRY HERDS IN MASHHAD SUBURB, KHORASAN RAZAVI PROVINCE, IRAN %A Azizzadeh, Mohammad %A علیرضا باهنر %A Seyedian Moghaddam, Atieh %J The Canadian Association of Veterinary Epidemiology and Preventive Medicine (CAVEPM) Conference %D 2010