Perozo, F., Finol, G., & Mavárez, Y. (1). Levels of immunoglobulin”“A in trachea, gut and bile samples of chickens vaccinated against newcastle disease. Revista Científica De La Facultad De Ciencias Veterinarias, 17(3). Recuperado a partir de https://mail.produccioncientificaluz.org/index.php/cientifica/article/view/15279