http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
27 páginas : ilustraciones, diagramas ; 25 cm.
"This paper was prepared for presentation to the participants in a symposium on the Mesoamerican "Classic" during the annual meetings of the Society for American Archaeology, San Francisco, May 4, 1973" -- p. [2] de cubierta
Fundación Alfredo Harp Helú Oaxaca Biblioteca de Investigación Juan de Córdova