Instituto Médico Nacional. Datos para la Materia Médica Mexicana. Primera Parte. Secretaria de Fomento-Instituto Médico Nacional. Typographic Office of the Ministry of Fomento. 1894. 515 p. Obtained on November 11, 2020 from: https://archive.org/details/datosparalamatepriminst/page/78/mode/2up