TY  - GEN
AU  - Swiefy Abdelrahim Swiefy Mohamed
AU  - Ashraf H. Barkawi , 
TI  - Post-partum reproductive performance of friesian cows in relation to season of calving and level of milk prodution / 
PY  - 1997///
CY  - Cairo : 
PB  - Swiefy Abdelrahim Swiefy Mohamed , 
N1  - Thesis(Ph.D.) - Cairo University - Faculty of Agriculture - Department of Animal production ( Nutrition - Breeding )
UR  - http://172.23.153.220/th.pdf
ER  -