2007. Estimation of fetal age in sheep by measurement of transthoracic , transabdominal, cotyledon length and width by using real- time ultrasonography: H.M AL-Rawi , S.N. Omran , K. A. Hussein. The Iraqi Journal of Veterinary Medicine. 31, 2 (Dec. 2007), 122–132. DOI:https://doi.org/10.30539/iraqijvm.v31i2.794.