“The Generations of the Vaccines: Case of Gastrointestinal Antiparasitic Vaccines Used in Veterinary Medicine ”. Revista Sistemas de Producción Agroecológicos 12, no. 2 (December 15, 2021): 74–96. Accessed September 8, 2026. https://ojs35-pruebas.metarevistas.org/index.php/sistemasagroecologicos/article/view/879.