TY - GEN AU - Magdy Zaky Sayed AU - Ahmed Gomaa Mohamed Hassan , AU - Elsayed Mahmoud Mohamed Abdelgawad , AU - Mahmoud Mohamed Hussein , TI - Infertility problems among cows and buffaloes in Beni - Suef and trails for treatment of repeat breeding / PY - 1999/// CY - Cairo : PB - Magdy Zaky Sayed , N1 - Thesis (M.Sc.) - Cairo University (Beni - Suef Branch) - Faculty Of Veterinary Medicine - Department Of Theriogenology ER -