“The Vertical coordination in the pig production chain in Lara state for the year 2017”, Teor. Enfoques. Apl. Cienc. Soc., vol. 14, no. 29, pp. 11–22, Dec. 2021, Accessed: Aug. 08, 2026. Available: https://revistas.uclave.org/index.php/teacs/article/view/3655