(1986). Effect of including varying levels of urea in the diet on the postpartum reproductive performance in Friesian cows. EKB Journal Management System, 26(3), 113-123. doi: 10.21608/ejap.1986.174119

. "Effect of including varying levels of urea in the diet on the postpartum reproductive performance in Friesian cows". EKB Journal Management System, 26, 3, 1986, 113-123. doi: 10.21608/ejap.1986.174119

(1986). 'Effect of including varying levels of urea in the diet on the postpartum reproductive performance in Friesian cows', EKB Journal Management System, 26(3), pp. 113-123. doi: 10.21608/ejap.1986.174119

Effect of including varying levels of urea in the diet on the postpartum reproductive performance in Friesian cows. EKB Journal Management System, 1986; 26(3): 113-123. doi: 10.21608/ejap.1986.174119