https://www.upn.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 U (1) Information Universidad pública en tiempos de pandemia: Desafíos y luchas Author/Editor: LEONARDO FABIO MARTÍNEZ PÉREZ