https://www.uexternado.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 K (1) Information Kelsen para erizos: ensayos en honor a Stanley L. Paulson Author/Editor: CARLOS BERNAL ,MARCELO PORCIUNCULA