Graniel Velasco, Pablo Alfonso, and Jesús Manuel Angulo Castellanos. “Otto Wolter Hayer: Médico, Agricultor Y Constructor”. Cinzontle 12, no. 26 (February 17, 2021): 12–19. Accessed November 21, 2024. https://revistas.ujat.mx/index.php/Cinzontle/article/view/3985.