https://www.cesa.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 U (2) Information Una Introducción a las Matemáticas Financieras modernas para no matemáticos Author/Editor: Andrés Mora Valencia Un sueño hecho realidad Author/Editor: Marco Fidel Rocha Rodríguez