Plataforma de la British Library. Préstamo de documentos especializados a nivel mundial. Inglés: You will find information on all of our new services, get answers to your questions about how the document supply service operates, find out about all of the latest product and service news and you can even place an order.
Colección de artículos académicos. Inglés: Home of scholarly research, your gateway to the world's most comprehensive collection of academic & professional digital content.
Directorio de webs de referencia- Collection of reference links to Internet resources in the humanities and social sciences. Library Of Congress, Inglés