Twenty years of interlibrary lending and document supply automation in Spanish academic libraries (1992-2012)

Trends over the past 20 years (1992-2012) of interlibrary lending and document supply (ILDS) automation in Spanish academic libraries are discussed. Taking into account the routines and procedures carried out by ILDS services -document identification, localization, document request, reception of borrowed items and user services or internal management- the article lists the software used in Spanish universities to handle these services, setting it into the context of the evolution of each process in parallel with software developments.