TY  - GEN
AU  - Gehan Zakaria Mousafa
AU  - Elsayed Mohamed Badawy , 
AU  - Osama Mohamed Zahran , 
TI  - Studies on some hygienic aspects related to low hatchability in broiler breeder eggs / 
PY  - 1999///
CY  - Cairo : 
PB  - Gehan Zakaria Mousafa , 
N1  - Thesis (Ph.D.) - Cairo University - Faculty Of Veterinary Medicine - Department Of Veterinary Hygiene and Management
UR  - http://172.23.153.220/th.pdf
ER  -