TY - GEN AU - Mahmoud Lotfy Sayed Mohamed AU - Abouzeid Abdelmeguid Abouzeid , AU - Amal Abdelaziz Elmolla , TI - Studies on some infectious respiratory affections in calves / PY - 1999/// CY - Cairo : PB - Mahmoud Lotfy Sayed Mohamed , N1 - Thesis (M.Sc.) - Cairo University - Faculty Of Veterinary Medicine - Department Of Internal Medicine and Infectious Diseases UR - http://172.23.153.220/th.pdf ER -