(1991). Effect of Month of Calving, on Some Reproductive Traits in Friesian Cows under Egyptian Environmental Conditions. Intervals Parturition to : Estrus, Service and Conception and Gestation period. Egyptian Journal of Animal Production, 28(2), 119-130. doi: 10.21608/ejap.1991.120594
. "Effect of Month of Calving, on Some Reproductive Traits in Friesian Cows under Egyptian Environmental Conditions. Intervals Parturition to : Estrus, Service and Conception and Gestation period". Egyptian Journal of Animal Production, 28, 2, 1991, 119-130. doi: 10.21608/ejap.1991.120594
(1991). 'Effect of Month of Calving, on Some Reproductive Traits in Friesian Cows under Egyptian Environmental Conditions. Intervals Parturition to : Estrus, Service and Conception and Gestation period', Egyptian Journal of Animal Production, 28(2), pp. 119-130. doi: 10.21608/ejap.1991.120594
Effect of Month of Calving, on Some Reproductive Traits in Friesian Cows under Egyptian Environmental Conditions. Intervals Parturition to : Estrus, Service and Conception and Gestation period. Egyptian Journal of Animal Production, 1991; 28(2): 119-130. doi: 10.21608/ejap.1991.120594
Effect of Month of Calving, on Some Reproductive Traits in Friesian Cows under Egyptian Environmental Conditions. Intervals Parturition to : Estrus, Service and Conception and Gestation period