Smith BI. Case Report – Diagnosing twin pregnancies in Holstein cows: Accurate diagnosis by transrectal ultrasonography and outcome of twin pregnancies. Case report. Bov. pract. [Internet]. 2008 Feb. 1 [cited 2024 Sep. 10];42(1):76-85. Available from: https://bovine-ojs-tamu.tdl.org/bovine/article/view/42