Szenci O, Varga J, Bajcsy AC. Role of early pregnancy diagnosis by means of ultrasonography in improving reproductive efficiency in a dairy herd: A retrospective study. Bov. pract. [Internet]. 1999 Jan. 1 [cited 2024 Jul. 23];33(1):67-9. Available from: https://bovine-ojs-tamu.tdl.org/bovine/article/view/1600