There has been data ("del Proyecto Socialista Al de Unidad Nacional: La Funcionalidad de La Universidad de Nuevo Leon y El Rectorado de Enrique C. Livas, 1943-1949") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Thu Dec 26 07:10:15 2019, so the data displayed here has been removed .