%0 Journal Article
%T Factors Affecting Days Open in Holstein Dairy Cattle in Khorasan Razavi Province, Iran; A Cox Proportional Hazard Model
%A A. Bahonar
%A  Azizzadeh, Mohammad
%A  M. Stevenson
%A  M. Vojgani
%A  M. Mahmoudi
%J Journal of Animal and Veterinary Advances
%@ 1680-5593
%D 2009