TY  - GEN
AU  - Nasser Abbas Youssef Sherif
AU  - Amira Hassan Mohamed , 
AU  - Nabil Ahmed Hussein , 
TI  - Laboratory studies on the effect of some extraneous contaminants present in imported and locally produced poultry vaccines / 
PY  - 2000///
CY  - Cairo : 
PB  - Nasser Abbas Youssef Sherif , 
N1  - Thesis (Ph.D.) - Cairo University - Faculty Of Veterinary Medicine - Department Of Clinical Pathology
UR  - http://172.23.153.220/th.pdf
ER  -