CONTRERAS UTRERA, Julio.
 Smallpox epidemic of 1797-1798 in Villa of Orizaba and the towns of Maltrata, Aquila and Ixhuatlancillo.
<strong>Contribuciones desde Coatepec</strong>, [S.l.], n. 37, p. 25-45, sep. 2022.
ISSN 3122-3877.
Available at: &lt;<a href="https://revistacoatepec.uaemex.mx/article/view/19560" target="_new">https://revistacoatepec.uaemex.mx/article/view/19560</a>&gt;. Date accessed: 07 nov. 2026.