Applying of B-mode ultrasound for determining pregnancy by means of measurement of Placentomes Diameter and Fetal Bi-parietal diameter in dairy cows. Iraqi J. Vet. Med. [Internet]. 2019 Jan. 31 [cited 2025 Apr. 27];42(2):88-94. Available from: https://www.jcovm.uobaghdad.edu.iq/index.php/Iraqijvm/article/view/304