http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
v. 1. Las ideas. La violencia -- v. 2. Las instituciones sociales. El problema economico -- v. 3. El problema agrario.
The Cushing Library/Chapman Texas Collection copy is part of the Floyd & Louise Chapman Texas & Borderlands Collection.
Part of the Mexican Revolution Collection.