Serrano-Díaz G, Villa-Mesa O. Effect of some factors of the production model and the lunar phases on the duration of gestation and sex of the bovine calf. Spei domus [Internet]. 2019 Nov. 4 [cited 2026 Jul. 5];15(30-31):1-20. Available from: https://revistas.ucc.edu.co/index.php/sp/article/view/3774