The University Extension Library (BEU) is a digital repository of articles, magazines and books, registered within the framework of the repository system of the Central Library of the National University of the Center of the Province of Buenos Aires (UNICEN), which complies with the guidelines established by the National System of Digital Repositories (SNRD).

It is the first university extension library in Argentina, and one of the first in Latin America, whose objective is to gather material on the university extension function, including from conceptual approaches and its theorization to the historical construction of this function in all its aspects. It is an open project in permanent collective construction.

It is a proposal that is part of the line of publications of the Regional Center for Studies in University Extension (CREXU) under the Secretariat of Extension of the Rector of UNICEN and has support from the Secretariat of University Policies of Argentina.