https://www.univalle.edu.co/ Content Type OA ? PCA ? Books (Back List, Front List) No Yes Request a holdings comparison Portico provides a free holdings comparison service to compare a library’s journal or book holdings to the Portico archive. Search titles and ISSNs by keyword: Show: E-Books All0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ Titles start with B (1) Information Barreras Invisibles: Jóvenes, pobreza y violencia Author/Editor: María Castillo-Valencia ,Diana Marcela Jiménez Restrepo ,Ángela María Franco Calderón ,Boris Salazar ,María Isbel Caicedo Hurtado ,Juan Pablo Pérez Sáinz