https://www.unam.mx/ 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 (2) Information Biodiversidad, Ed. ILL - Illustrated, 1 Author/Editor: Claudia Delgadillo Chávez Breve historia del libro en México, Ed. NED - New edition, 4 Author/Editor: ERNESTO DE LA TORRE VILLAR