Strives to organize knowledge of the region. It contains nearly 5,300 separate articles. Most topics appear in English alphabetical order.

Its outstanding feature is the inclusion of journal articles. For more than 50 years the periodicals have been indexed, as well as compilations such as Festschriften, and the proceedings of congresses.

Includes entries for maps and atlases.

Esta obra es una historia política de la ciudad de México, y comprende desde su fundación en el siglo XIV hasta las postrimerías del siglo XX. Por lo que sabemos no existe un ejemplo similar en la historiografía. Tal es el punto del volumen: vindicar la historia política como una necesidad absoluta en el entendimiento de la historia de la ciudad. Este proyecto es singular: lo político es el punto de fuga, el ámbito privilegiado del análisis y el principio ordenador de la narración.

"In this book, Duccio Bonavia tackles major questions about these camelids, from their domestication to their distribution at the time of the Spanish conquest. One of Bonavia's hypotheses is that the arrival of the Europeans and their introduced Old World animals forced the Andean camelids away from the Pacific coast, creating the (mistaken) impression that camelids were exclusively high-altitude animals. Bonavia also addresses the diseases of camelids and their population density, suggesting that the original camelid populations suffered from a different type of mange than that introduced by the Europeans. This new mange, he believes, was one of the causes behind the great morbidity of camelids in Colonial times. In terms of domestication, while Bonavia believes that the major centers must have been the puna zone intermediate zones, he adds that the process should not be seen as restricted to a single environmental zone.".